Where: Nedvědice, Czech Republic

Start of construction: early 13th Century

End of construction: 16th Century

Most important renovation: 18th/19th Century

Accessible: yes, interior only with guide

Important fact:

the striking square tower dates from the end of the 14th century. The German name is Burg Bernstein after Bärenstein.

https://www.hrad-pernstejn.cz/en