Sønderborg, DenmarkSønderborg, Denmark
Source: https://commons.wikimedia.org/wiki/File:Harbour_of_S%C3%B8nderborg.jpg
Author: Erik Christensen
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Sønderborg is a small town on the island of Als in southern Denmark, near the border with Germany. Covering an area of 496.57 sq km (191.7 sq mi), Sønderborg has a population of 27,000 (2011 estimate).

Sønderborg was named after the local castle, Sønderborg Slot, which was built in 1170 by Valdemar I. Over the centuries, the castle has played many different roles, as its intended purpose as well as being a prison (to Christian II for 17 years in the early 16th century), as a warehouse, as hospital, as military barracks and presently, as a museum.

The town of Sønderborg saw heavy fighting between Denmarki and Prussia during the Second Schleswig War of 1864. The battle damaged the local windmill, Dybbøl Mølle, which has been rebuilt and today stands as a national symbol. Denmark lost the war, which saw Sønderborg and much of southern Jutland being annexed into Prussia, and remained part of Germany until 1920.

Dybbøl Mølle, Sønderborg, DenmarkDybbøl Mølle, Sønderborg, Denmark
Source: https://commons.wikimedia.org/wiki/File:Dybb%C3%B8l_M%C3%B8lle.1.jpg
Author: Erik Christensen
photo licensing

Visiting Sønderborg

Today it is easy to reach Sønderborg by flight from Copenhagen. It town also has rail connection with major towns in Denmark. You can also reach it by taking the E45 expressway (Autobahn 7) from Germany.

Sights & Attractions in Sønderborg


  1. Historiecenter Dybbøl Banke
    A center that provides a vivid retelling of the history of Sønderborg.

  2. Sønderborg Slot
    The historical castle, destroyed in the 1864 war, and since then rebuilt.

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