Nesebar, Bulgaria
8th century BCE
Veliko Tarnovo, Bulgaria
12th century
Vidin, Bulgaria
10th century AD
Belogradchik, Bulgaria
14th century
Kavarna, Bulgaria
14th century
Ivanovo, Bulgaria
11th century
Sofia, Bulgaria
16th century
Kyustendil, Bulgaria
5th century AD
Shumen, Bulgaria
7th century AD
Veliki Preslav, Bulgaria
9th century AD
Provadia, Bulgaria
10th century AD
Pernik, Bulgaria
809 AD
Silistra, Bulgaria
1841-1853
Veliko Tarnovo, Bulgaria
12th century
Sliven, Bulgaria
4th century AD
Tervel, Bulgaria
6th century AD
Sevlievo, Bulgaria
10th century AD
Karnobat, Bulgaria
7th century AD
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.