Nordborg Castle

[1] According to Saxo, Nordborg Castle was founded by King Svend Grathe (c. 1125–1157) under the name Alsborg.

Alsborg was built while the Wends still dominated the Danish coast; its location a few kilometers inland meant that the castle could not be attacked without warning, and the local population had a better chance of taking refuge there.

1158), Alsborg was renamed Nordborg, literally "northern fortress" (compare English "Norbury").

In 1571, King Frederick II’s brother Hans the Younger (1545–1622) inherited his mother Queen Dorothea's possessions of Als and Sundeved including Nordborg.

Hans was an enterprising man, who in the next 50 years constantly expanded and improved his properties.