Kufstein fortress is one of the most impressive medieval constructions in Tyrol. It is located on a hill rising above the city of Kufstein. This fortress has already been built very early in order to control the entrance from the Alpine foothills into the Inntal valley. However, it has been mentioned for the first time in 1205 AD, when it was in possession of the bishops of Regensburg. In 1415 it was reinforced by Louis VII, Duke of Bavaria.
In 1504 the city and the fortress were besieged and conquered by Emperor Maximilian I. Maximilian had the massive round tower built between 1518 and 1522, substantially adding to its defensibility. From 1703 to 1805 it was a Bavarian possession, returning to Austria in 1814. The fortress acted as prison for a number of political dissidents during the Austro-Hungarian empire.
Today it houses the City Museum of Kufstein. Part of it is also used for concerts and meetings.
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.