Sønderborg

 

 

Sønderborg (German: Sonderburg, Sønderjysk: Synneborre / Synnebo) is a town and municipality in Southern Jutland with 27,841 inhabitants (2020) on both sides of Alssund. Most of the town is located on the island of Als, which is connected to Southern Jutland by King Christian X's Bridge and the northern Alssund Bridge. It is Sønderjylland's largest city and grew up around Sønderborg Castle, which was built a little before the year 1200. Archaeological excavations in various places in the city show the medieval Sønderborg on Humletorvet.

Shipping was an important profession from the 16th century, when ships from Sønderborg sailed throughout the Baltic Sea area with goods from Als. The Prussian bombing in 1864 hit Sønderborg very hard, where more than 80 percent of the town's houses burned down or were damaged. The reconstruction took place slowly, and only after 1900 did the population grow noticeably, e.g. due to German immigration.

Southern Jutland belonged to Germany in the period 1864-1920, and the city lost many citizens who emigrated to Denmark, which lay north of the Kongeå border. In return, Sønderborg gained several German military institutions, and the city's industry and trade developed further. After the Reunification in 1920, a number of Germans emigrated, and the population dropped again from 11,500 before World War I to 8,500 in 1921. The port and road network were expanded, and Christian X’s Bridge replaced the old pontoon bridge. The city grew especially after World War II, and from 1960 it had overtaken Haderslev in terms of population and had become South Jutland's largest city. Half of the city's inhabitants were employed in handicrafts and industry in 1960, and the metal and machine industry in particular were significant industries.

 

In 1970, with the municipal reform, Sønderborg lost its status as a county seat, and the population fell until the mid-1980s, after which the trend reversed.

The Sønderborg area today has a dynamic business environment within high technology, machinery, food and textile industry and has many educational institutions and colleges. The University of Southern Denmark in Sønderborg offers i.a. business economics, business languages ​​and engineering educations, and in addition there are e.g. Sønderborg Idrætshøjskole og kunstskole. The city is also home to the South Jutland Symphony Orchestra. Sønderborg Hospital is the city's largest workplace with 1,500 employees.

Sønderborg is the capital of Sønderborg Municipality, which is part of the Region of Southern Denmark. On 1 January 2007, Sønderborg became part of the larger Sønderborg Municipality. The municipality currently has 74,561 inhabitants (2019). Other cities in Sønderborg Municipality are: Nordborg, Augustenborg, Guderup, Fynshav, Høruphav, Vester Sottrup, Broager, Havnbjerg and Gråsten.

 

The town of Sønderborg was built on the island of Als in the latter half of the 12th century roughly at the same time as Sønderborg Castle, favored by good harbor conditions and services to the castle. The city consists of old and new buildings. Sønderborg was badly damaged by Prussian artillery bombardment during the siege of the Dybbøl redoubts in 1864. Large parts of the city center and the harbor area burned down. The largest part of the city lies on Als, while a smaller part lies on the Sundeved side of Alssund. From the mid-19th century until 1930, the two districts were connected by the pontoon bridge Frederik VII's Bro. If you had to cross, tolls were paid, except on Sundays, when there was church attendance. The migration of people every Sunday meant that the Sundeved side was popularly called "The Christian side".

Sønderborg is known especially for the castle, the popular spirit routes across the Flensburg Fjord until 1999 and the annually recurring ring riding, which in high summer is a town party without equal for several days.

 

Events

In 1888, Sønderborgs Kredsringriderforening was established and ever since then the ringrider festival has been held in Sønderborg every year. Nowadays, the annual ring riding has become a folk festival over four days in July (2nd weekend) with the participation of approx. 500 riders and 40,000 guests. Sønderborg Ringridning is also known for its annual men's lunch with around 1,600 participants, making it the world's largest men's lunch.

The knightly tradition of ring riding from the Middle Ages has survived in Southern Jutland. In all its simplicity, ring riding involves catching a ring suspended from a gallows at full gallop with a lance. The interaction between horse and rider can still fascinate, just like when the armored knights rode to the ring in front of Sønderborg Castle.

The town festival in Sønderborg began in a small way with Atletklubben Alsia - now Brydeklubben Alsia - as the sole organizer in 1969. The four-day town festival at Ringriderpladsen always begins on Ascension Day and lasts until Sunday evening. The town festival in Sønderborg is best known for "The world's largest women's lunch", where the limit is set at just under 1,000 participating women. The ladies' lunch has previously been in the Guinness Book of Records.

Since 2002, the annual Sønderborg Beach Party has been held, where live bands and DJs perform. On Rådhustorvet and in Store Rådhusgade you will find the city's many cafes, restaurants as well as discos and other entertainment.

 

Sights

Alspigen is a sculpture in bronze and granite by Adam Fischer erected on Rådhustorvet in 1951. The girl "Als" symbolizes the lush island it stands on, and the students celebrate their matriculation every summer with a dance around the fountain.

Ewers Pakhus on the harbor now functions as an integral part of the Multikulturhuset, which houses Sønderborg's main library, Deutsche Bücherei (the German library) and Sønderjylland's Art School. On the ground floor there is an adult library and an art hall with space for events and a café.

The museum at Sønderborg Castle has interesting historical collections with permanent exhibitions such as: Southern Jutland under German rule, referenda and Reunification, Sønderborg town's history 1864-1940, the dukes of Schleswig and Holstein, the history of the castle, local costumes and household utensils. In addition, there are changing exhibitions, e.g. art exhibitions.

The German minority museum on Rønhaveplads illuminates the history of the minority after approx. 1850. There are art and cultural history collections to shed light on identity, the museum, everyday life, war participation 1939-45, the court settlement, as well as the positive development after 1955.

Kirkegade 8 was built in 1643 and has been owned and inhabited by tailors and other craftsmen and skippers. The gable house, which is listed in class B, was renovated in 1985. Today there is a ringrider museum in the building. The museum is open 2 days a week from June to August. During the ringrider festival in Sønderborg, the museum is open Friday, Saturday and Sunday at 11-16. Group visits can be arranged all year round on tel. +4574427575.

2 km west of the town is the memorial park with the fortifications and the memorial room at Dybbøl Mølle with drawings, photos, uniforms and weapons from the wars in 1848 and 1864 and an exhibition about the history of the mill and about the warrior graves throughout North Schleswig. Near the mill is the History Center Dybbøl Banke, which depicts the events of the 2nd Schleswig War at Dybbøl, Sønderborg and Sundeved.

Outdoor art is an important part of the street scene, and the city's main street, Perlegade, is marked by Jørgen Haugen Sørensen's sculpture Gate of the Senses (1979). In the Sønderborg area you can experience revues, folk music, theatre, orchestras, choirs, etc. at the city's venues such as Alsion, Sønderborghus, Sønderborg Teater and in Mølleparken.

The town has a brass band orchestra of 25 musicians. The volunteer fire brigade in Sønderborg switched to being staffed by professional firefighters in 2015, and was therefore closed down, but the corps' orchestra continued its musical work under the name Sønderborg friv. Fire protection orchestra.

In 2021, restaurant Syttende received a star in the Michelin Guide as the first in the city.

 

Churches

Sankt Marie Church, not far from King Christian the X's Bridge, is so marked by many reconstructions that it is largely a product of the Renaissance. Until 1957, when the town was divided into two parishes, it was named Sankt Jørgens Kirke, as the previous medieval church on the site was attached to a Sankt Jørgensgård. Its current appearance is essentially due to a rebuilding in 1595-1600. The gable's profiled bands and vertical masonry pillars, as well as the flat-braced vaults, flat-arched windows and portals and the roof rider on the roof of the nave thus date from the Renaissance.

However, the spire originates from a rebuild in 1960. The furnishings consist of, among other things, of a Renaissance altarpiece from 1618, a bronze-cast baptismal font from 1600, a small late Gothic chancel arch crucifix from the beginning of the 16th century, a pulpit in the High Renaissance, a work from 1599 by Hinrich Ringerinck from Flensburg, as well as the duke's chair in the two east bays of the south aisle , furnished around 1625.

The Christian church at the city's newest cemetery at Ringgade in the east of the city dates from 1957 and is not without reason reminiscent of the Grundtvig church in Copenhagen. It was designed by Kaare Klint, who completed the father P.V. Jensen Klint's famous church in the capital. In 1973, the church was expanded with a transept in the Gothic style.

 

History

The town of Sønderborg was laid out on Als in the latter half of the 12th century roughly at the same time as the construction of Sønderborg Castle.

The city's natural catchment area was Als and most of the Sundeved peninsula on the other side of the strait. The location was suitable for shipping and fishing.

The first approach to urban formation took place at Augustenborg Fjord, in a place that was central to the rich farming settlements on Als. Here, in the 12th century, a seasonal market place arose, surrounded by ramparts and graves – which today is called Brovold in the village of Bro near Augustenborg. However, the introduction of the large kegs and the increasing trade between Denmark and the Hanseatic States in Northern Germany required a deep, protected anchorage as close to the Baltic Sea as possible. It was found where the Alssund flows into Sønderborg Bay and Flensborg Fjord. At the same time, the site had the advantage that it could serve Sundeved with the ferry.

The first reliable evidence of the town is from 1256, when Duke Valdemar Abelsøn wrote a letter from the castle to the monks in Løgumkloster. The town of Sønderborg gradually arose near the castle. The first inhabitants were builders, merchants and people from the uplands. Rosengade and Slotsgade were the first streets in Sønderborg. The first modest town grew quickly, and sometime in the 13th-15th centuries, the large urban area was probably laid out, where Store Rådhusgade and Lille Rådhusgade meet in the long triangular Rådhustorv and continue into Perlegade.

On that occasion, a brick town hall was built at the bottom of the square - where the town hall is still located (the medieval town hall was destroyed by the Prussian bombardment in 1864; the current one is from 1933). At the same time, the skipper and fishing district grew along the beach to the north, the present-day Sønderborg and Havbogade, and up towards the leprosy hospital on the hill (whose church is St. Marie Church) the district of St. Jørgensby forward (Jørgensbjerg, Lilliegade and Kirkegade).

 

The merchant city 1536-1850

Around 1510, King Hans built a shipyard near the castle. Roughly at the same time, the extensive filling in off Brogade and at the southern end of Søndergade will be carried out. In 1532-1549, the former king, Christian II, was imprisoned at Sønderborg Castle, but he was free to move around the city for large periods. The maintenance of the king and the guard has undoubtedly had a positive impact on the city's commercial life. Especially at the end of the 16th century, the city had a heyday, when trade and shipping flourished, which is primarily due to rising prices for agricultural products.

In 1590, Sønderborg had its market town rights renewed when Hans the Younger gave the town a market system. The tax list from 1607 states that out of 340 taxpayers there were 100 craftsmen. The artisans thus formed a significant part of the city's inhabitants.

In the 15th century, a new district emerged by the water along Søndergade and Havbogade. In the 18th century, the neighborhood was a rich maritime environment; in 1770, 110 houses were owned by skippers and 44 by sailors.

But in the 17th century, the good times ended, and the city struggled with the growing trade at several illegal ports on the Als. Flækken Nordborg received several trading privileges and, especially in the early 18th century, became a significant competitor in the battle for trade with the Als farmers. It was, on the whole, a difficult period for Sønderborg, but the good harbor conditions were an important prerequisite for the town to be able to build up quite a good export of grain and cattle to home and abroad in the latter half of the 18th century. In addition, extensive shipbuilding took place, and several industrial factories already existed at the turn of the 19th century. During the three years' war 1848-1850, the Danish military was strongly represented in Als, which the town's business community profited from.

 

1864-1920

The war between Denmark, Prussia and Austria in 1864 had serious consequences for Sønderborg. The 10-week siege and shelling of the entrenchments at Dybbøl Banke meant that shells often fell in the town. Things went particularly wrong on the night between 2 and 3 April, when the city was heavily bombarded. The violent bombardment resulted in many destroyed houses. The town hall and the duke's mansion from the 1580s, Ernst Günther's Palace in Perlegade, were particularly hard hit. When the city came under German rule after the war, it meant great upheaval for the citizens. The city government in Sønderborg was German from 16 November 1869, and on 1 January 1870 the Schleswig-Holstein market town system was introduced. It set new limits on who could take part in the local elections. In 1875, there were only 374 eligible voters in Sønderborg, a significant decrease in a town with around 4,000 inhabitants.

In 1865-66, the Prussian government built a new and improved ring of fortifications around the city, both on the Sundeved side (the current redoubts on Dybbøl Banke) and on the Als side. At the same time, the later Kongevej was built as a military road around the city. Of the fortress on the Als side, only the stock houses on Kongevej and Helgolandsgade and a remnant in a private garden at Alsgade have been preserved. As the danger of a counter-attack was overrun with the German victory over France in 1870-71, the plant was closed down in 1884.

In July 1888, a circle of the city's citizens held the city's first ringrider party, where over 100 festively dressed riders participated, the party site was a 4-acre field north of the city, which was made available by Sønderborg Eksportbryggeri.

In 1905, the German Empire decided that Sønderborg, together with Flensburg, should be the new headquarters for the rapidly growing German High Seas Fleet. On the slope north of the city, the new marine station designed by architect Eugen Fink in the German Ordersburg style was erected in the years from 1906. At the same time, officers' villas were built both in Engelshøjgade and as a garden city along Jomfrustien. The naval station became very important for the town's population, which grew rapidly after 1907, when the facility was completed. It was the public authorities in particular who led the way in the many new buildings. In addition to the marine station, a county hospital, school and gymnasium, a branch of the Rigsbanken, a courthouse and a post office were built.

Until then, traffic to the city had largely been done by steamships on Alssund and Flensburg Fjord, but in 1898 the narrow-gauge county railways were built at Als (the bus station is the old county railway station), and in 1902 the town got a standard-gauge connection with Tinglev. In order to make room for the growth, the city adopted a town plan in 1906, drawn up by architect Magnus Schlichting in Flensburg. After it, the streets east of Kongevej and the whole "Nystaden" were built. At the same time, a large number of streets were given German names such as Kaiser-Wilhelm-Allee (King Road), Bismarckstrasse (Østergade) and the streets in the "New City" were named after German poets (only Goethe survived after 1920).

Kongevej became the city's fine residential street, while metropolitan apartment buildings in Art Nouveau style rose at Prinz-Adalbert-Strasse (Helgolandsgade), Løngang and in Dybbølgade on the Sundeved side. The highlight of the German era was the celebration in 1914 of the 50th anniversary of the victory at Dybbøl. But in the same days the First World War broke out, and within a few years there was hunger, poverty and misfortune in the city. In November 1918, revolution broke out throughout Germany, and a "Workers' and Soldiers' Council" was also established in Sønderborg under the leadership of the tailor, the charismatic Bruno Topff. The council was to ensure supplies and peace and order during the winding down of imperial rule and quickly handed over authority to the new social democratic government.

 

Reunification in 1920

After the vote on 10 February 1920, where 74.2% in the northern part of Schleswig voted for Denmark, it was clear that Sønderborg would once again become Danish. As in several of the other southern Jutland market towns, there was no Danish majority in Sønderborg. Here only 44% voted for Denmark and 56% for Germany, but when the area voted as a unit the result was given. Reunification was celebrated with great festivities throughout Southern Jutland on the days 10 to 13 July 1920. On 11 July, the largest of the celebrations was held in the remains of the ramparts on Dybbøl Banke. The royal family, led by King Christian X, attended speeches, songs and performances.

At the entrance to Sønderborg Castle Square, there is a stone that was unveiled on Valentine's Day 1920 to commemorate the reunion.

After Reunification, he oversaw major reconstruction work not only in Sønderborg, but everywhere in Sønder Jutland. First of all, all public administration had to be made Danish again, and new city, municipal and parish councils had to be elected. Economically, the region was also very neglected, so large public works were immediately initiated by the state, e.g. the construction of the Nordhavnen and the construction of a railway connection between the mainland and Als. It was therefore decided to build a new bridge, King Christian X's Bridge, which was a combined railway and road bridge. The costs for the construction are shared between the state, Sønderborg County and Sønderborg Municipality. In total, it cost DKK 2.85 million (approx. DKK 103.4 million in 2013) to build the bridge. It was inaugurated with great festivity on 7 October 1930.

In 1927, the city issued an architectural competition for a new city plan. It was won by architect Kaj Gottlob – and according to his idea, a series of long ring and radial streets were built: Ringgade, part of Grundtvigs Alle, Ringridervej, Søndre Landevej and Arnkilgade. At the same time, Sønderborg now grew almost explosively, especially due to the construction of the large worsted spinning mill, the growth of the Solo factory, the new county hospital and a number of smaller companies.

In the years 1920-27, Sønderborg was the seat of Søndre Landsret.

 

From 1930 to 1980

During the 1930s, a lot of construction was started in the city. In 1933, a completely new town hall could be inaugurated, designed by architect Holger Mundt, and in 1938 Sønderborg Andelsboligforening was founded, which had its first building on Sundquistgade completed in 1939.

In 1942, another housing association was founded, and during the 1940s and 50s, new residential areas with terraced houses, blocks of flats and terraced houses sprung up around the city.

The years of occupation were felt in Sønderborg as in the rest of the country. However, a significant event took place on 17-18. April 1944. On April 17, a German naval vessel opened fire on King Christian the X's Bridge, killing a pedestrian. The next day, it led to strikes and clashes between the citizens and the German military, although no one was injured.

Due to desertion, 11 German marines were executed on the evening of 5 May 1945 on the German minesweeper M 612 in Alssund, 2 km north of Sønderborg.

In 1947, the city council decided to use parts of the buildings in Havbogade for warehouses and docks. The National Museum and the Association for the Preservation of Old Buildings tried to change the decision. The remains of the quarter can be seen today partly on the spot, partly in the Old Town in Aarhus.

In 1950, Ingolf Nielsen bought Sønderjyllands Flyveselskab and began flying photo flights etc. from Ellegården's fields near Sønderborg. Seven years later he started taxi flying on the Sønderborg-Copenhagen route. SAS otherwise had a monopoly on all Danish domestic flights, so there could be no question of scheduled flights. However, he flew with reasonably fixed departure times. The airport itself on Kær Halvø opened in 1969.

From the 1960s, there was a constant business and population development that made Sønderborg develop into the most important city in the Alssund area. The municipal amalgamation in 1970 made the three municipalities in the area into a new large municipality. It was within the framework of the new municipality that the city continued to grow to the north and east. But also on Sundevedsiden and in Dybbøl, many new residential areas sprung up. The area as a whole was strengthened when in 1981 the new high bridge over the Alssund, the Alssund Bridge, could be inaugurated. As a result, a lot of heavy traffic was diverted around the city.

From the 1980s to 2000, there was a development of the IT and electronics industry in particular, at the same time as there was constant development within the education sector, which meant that in 1998 a branch of the University of Southern Denmark could be opened in the city. Since the Second World War, the industrial group Danfoss has also grown into an international large company, and together with other new industries at Als, this means that many people began to live in Sønderborg and work at Nordals.

The Alssund Bridge was inaugurated in 1981. It is 660 m long and has a usable width of 16 m. The bridge leads over the Alssund approx. 2 km north of Sønderborg and is designed as a high bridge with a navigation height of 33 m in the main section.

On 1 January 2007, the 7 municipalities: Gråsten, Broager, Sundeved, Sønderborg, Sydals, Augustenborg and Nordborg were combined into a new large municipality, Sønderborg. At the same time, a new era was marked with the construction of the combined university, research center and concert hall "Alsion" in 2007. At the same time, work began to develop Nordhavnen as a new city center area according to a master plan by the American architect Frank Gehry.

In 2012, Sønderborg fought against Aarhus to obtain the title of European Capital of Culture in 2017, but on 24 August 2012, Aarhus won the title. The Sønderborg motorway was inaugurated on 31 March 2012, and the following year the shopping center Borgen Shopping was inaugurated.

On 4 April 2014, the flag was raised for the last time at Sønderborg Barracks. It marked the end of Sønderborg's status as a garrison town. The barracks in Sønderborg had housed soldiers since it was completed in 1912. In 1966, the school was named the Infanteriets Befalingsmandsskole, where all sergeant training in the combat troops gathered in Sønderborg. In connection with the Defense Settlement 2013-2017, it was decided that the Army's Sergeant School should move from Sønderborg to Varde Barracks.

From September 2014 to the end of September 2017, the barracks was used as an asylum center for Syrian refugees. In the first two years, almost 700 Syrian asylum seekers lived at Sønderborg Barracks. The last approximately 350 asylum seekers were distributed to other centres.

In May 2019, Alsik Hotel opened, which with its 19 floors is among the largest hotels in Denmark.

 

Traffic and infrastructure

There is a connection to Sønderborg and Als from the Sønderjyske Motorvej E45 from the Aabenraa area via Hovedvej 41 and from Kruså via Hovedvej 8 which goes to Sønderborg and on to Fynshav. Two bridges carry traffic from Jutland over to Als, King Christian the X's Bridge (from 1930) in the middle of the town and the newer high bridge, the Alssund Bridge (from 1981).

The Sønderborg motorway, which connects Sønderborg at Dybbøl with the East Jutland motorway E45 at Kliplev, was inaugurated on 31 March 2012. The motorway is the first in Denmark to be built as a PPP project - public-private partnership - between the Road Directorate and Kliplev Motorway Group, KMG.

From Sønderborg Bus Station there is approx. every hour bus departures to Flensburg and Aabenraa. There are five city buses in Sønderborg. The more than 20 local buses cover the entire area from Flensburg to Nordborg. The two X buses cover most of Southern Jutland. Line 900X runs Vejle - Kolding - Haderslev - Aabenraa - Sønderborg and back. Line 915X runs from the west, departing from Esbjerg via Ribe, Toftlund, Aabenraa and Sønderborg.

From Sønderborg Airport, 7 km. from the city centre, there are several daily departures to Copenhagen with the company Alsie Express. Sønderborg is also the terminus of the railway network - with intercity connections to e.g. Odense and Copenhagen every two hours. There is a ferry connection from Fynshav to Bøjden on Funen and Søby on Ærø.

 

Profession

The industry and business life in the Sønderborg area is characterized by high-tech companies within IT, telecommunications, the electronics industry and the machine industry. Larger companies are i.a. Agramkow Fluid Systems A/S (develops, produces and markets fluid filling, testing and data acquisition solutions for appliance and automotive manufacturers) and JF-Stoll A/S. In 1960, half of the city's inhabitants were employed in crafts and industry, and the metal and machine industry in particular were significant industries. In 1951, engineer Jens Freudendahl founded JF-Fabriken, which manufactures agricultural machinery, and already in 1960 the factory had 1,000 employees, which made it the city's largest employer. After the German acquisition of Stoll and later the acquisition of the Danish co-operative giant DLG, production in Sønderborg was shut down and moved to Poland.

Some companies have been established by engineers trained in Sønderborg, and some by the push of a button from Danfoss. In 2002, 60 percent of the city's inhabitants were employed in the administration and service professions.

In Nordborg, the industrial group Danfoss has its headquarters, which employs around 1,000 employees – worldwide, the group has over 23,000 employees. Siemens Flow Instruments A/S is also based in Nordborg and has approx. 200 employees. Linak has its headquarters in Guderup, which produces electric linear actuators - Linak has 900 employees at Als.

Müller Gas Equipment A/S is located in Vollerup, which is an order and series manufacturing company whose main production is gas fittings for bottled gas, natural gas and medical and technical gases. The company currently employs approx. 150 employees.

The slaughterhouse group Danish Crown's pig slaughterhouse is located in Blans, approx. 14 km. from the city center and employs 940 employees and slaughters approx. 62,000 pigs per week. The telecommunications group TDC has a call center on Ellegårdvej in Sønderborg, which employs 370 employees. In August 2014, TDC entered into an agreement with the American service provider Sitel to outsource approximately 700 full-time positions, equivalent to approximately 800 employees, from its customer service. The agreement means that 650 employees in TDC's customer service will be based in Sønderborg from the end of 2015.

Sønderborg Municipality is the area's largest workplace with approx. 5,500 employees, who are geographically spread over the entire municipality. Sønderborg Hospital had 1,589 employees in 2012. In 2013, the equivalent of approx. 1,400 full-time employees.

 

Education

The university town of Sønderborg
The University of Southern Denmark's (SDU) campus at Alsion offers a wide range of engineering programs and a number of combination programs with language and economics. It is also possible to follow the business economics HD courses and subject packages on the master's in IT.

Vocational education, high schools and vocational academies
Erhvervsakademi Sydvest offers the short advanced courses computer scientist, production technologist, design technologist, marketing economist as well as a bachelor's degree in design and innovation.
In 2011, VUC Syd rebuilt the old Skt. Jørgen's school in Sønderborg for a completely new, visionary teaching environment. The course participants are adults of all ages and from all parts of society.
Sønderborg State School is a high school that offers STX and HF. The school has approximately 1,000 students.
Alssundgymnasiet Sønderborg is a high school that, among other things, focuses on natural sciences through the "science gymnasium" and on internationalization. The school has 437 students.
Business College Syd (formerly Sønderborg Handelsskole) offers HG, HHX, main course and further education.
EUC Syd offers approx. 75 long and short vocational courses and more than a thousand different AMU and continuing education courses. In addition, Higher Technical Examination and International High School, academy and international educations. EUC Syd also has branches in Aabenraa, Haderslev and Tønder.
Sønderborg Produktionshøjskole offers a school course which aims to strengthen the participants' professional, social and personal development and improve their opportunities in the education system and on the labor market.

Private schools
The private school Als is not oriented in any particular ideological direction, but acknowledges a cultural commonality with the Danish folk church. The school has 362 students.
Deutsche Schule Sonderburg is bilingual and introduces students to German and Danish culture. The school has approximately 180 students.
Dybbøl Efterskole is aimed at students who have received special education and who are still interested in book-based education. Dybbøl Secondary School has room for 85 students.
The Sports College in Sønderborg is a college that offers coaching/instructor training in specific sports. The school has a swimming pool with sauna, ball games hall, two sports and exercise halls, indoor climbing wall and fitness area. The school has a student population of around 130 students.
Sønderborg International School is an international school that follows an international Cambridge teaching program. The school also offers Danish on an equal footing with Danish schools to ensure that students can continue their studies in Denmark or abroad. The school focuses on good settings and book-based learning. The school has 124 students, teaching students up to and including the 9th grade.

Public schools
The Ahlmann School on Kongevej was inaugurated in 1907. It functioned until 1925 as a German school. In 1937 it was named Ahlmann School. The school has 274 students.
With its 806 students, Dybbøl School is divided between Dybbøl School and Bülow School, the city's largest public school.
Humlehøj School was built in 1973 and has 326 students from 1st to 9th grade. The school was built together with the Humlehøj halls and the city's only public swimming pool.
Sønderskov School was built in 1954-1955 and is located in the eastern part of the city. The school has 660 students.
Ulkebøl School on the outskirts of the city is the oldest of the primary schools and has 616 pupils.

Former educational and research institutions
The Sønderjyske Sygeplejeskole used to exist in Sønderborg, but has been moved to Aabenraa. The nursing school offered the nursing education. There was also the option to take the training to become a nurse as an online training or take the TEK training with a focus on welfare technology.

Until 1998, the Engineering College South was located in Sønderborg, which today forms the campus of the University of Southern Denmark (SDU) in Sønderborg.
In the period 2004-15 there was a Center for Border Region Research at SDU Sønderborg.

 

Sport

SUB Sønderborg has its origins in Sønderborg Boldklub, which was founded on 26 October 1919. The club is one of the parent clubs of FC Sønderborg, which plays in the Jyllandsserien. However, SUB Sønderborg is still an independent youth team.

The club is known for developing many talents who can succeed in the Super League and even bigger leagues. The club is, among other things, an incubator club for SønderjyskE, which plays in the Super League.

Sønderborg was the destination city for the 3rd stage of the Tour de France 2022, before the riders and staff flew from Sønderborg Airport to continue the race in France.

Twin cities
Finland Pori in Finland, since 1952