The Bollerup estate was first time mentioned in 1130. The castle was built in the end of 15th century. The present living quarters were built in the 1840s. It lies on an islet and is surrounded by a moat.
Bollerup has been owned by several families like Thott, Gjöe and Rantzau. Today it houses the Bollerup Agricultural Institute. Guided tours of the fort, grounds, stables and church are available during the summer.
References:Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.