Where: Amt Wachsenburg, Germany

Start of construction: 10th Century

End of construction: 20th Century

Most important renovation: 1966-1970

Accessible: yes, interior with guide

Important fact:

The keep was demolished in the 17th century, but rebuilt in 1905. In 1945, Patton and Eisenhower met at the castle.

https://www.wachsenburg.com/en-gb/home