The castle was built in 1300-the figure of a 30 x 30 m large knock. Trøjborg mentioned in 1347 in a letter from Duke Valdemar of Jutland by Duke Valdemar Atterdag castle. In 1407 came the Queen Margrethe's possession, but later pledged it down to Ribe bishop.
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In the 1800s, was the owner, farmer Knud Knudsen Lausten plans to establish a teacher training college on the spot, but when these plans were not realized, the castle was demolished in 1854. Parts of the southern wall and the basement is preserved.