Where: Hohenschwangau, Germany

Start of construction: 14th Century

reconstruction: 1833-1837

Most important renovation: 19th Century

Accessible: yes, only with guide

Important fact:

​Reconstructed from a ruin in the Tudor style in the 19th century, after devastation in wars in 1632, 1635, 1742/1743 and 1809.

https://www.hohenschwangau.de/430.html