Trøjborg Castle Ruin is located approximately 12 km north of Tønder in Visby in Southern Jutland. The name Trøjborg probably derives from the Greek Troy.
The castle was built in the 14th century on a 30 × 30 m large mound. Trøjborg is mentioned in 1347 in a letter from Duke Valdemar of Southern Jutland as the castle of Duke Valdemar Atterdag. In 1407 it came into the possession of Queen Margrethe, but was later mortgaged to the episcopal see of Ribe.
Trøjborg in 1950. From Denmark on Film, the Danish Film Institute.
After the Reformation in Denmark in 1536, the ecclesiastical estates passed to the Crown, and King Frederik 2. transferred the castle to Daniel Rantzau as thanks for his services in the war against the Swedes. Around 1580, Peter Rantzau had the original medieval castle demolished in order to build a Renaissance castle on the site instead. When the Rantzau family line died out in 1658, the castle slowly fell into disrepair.
In 2014, Trøjborg is owned by Søren Degn Clausen, who runs a farm on the estate. In addition, parts of the main building are rented out as holiday apartments and for events.
