Where: Wierschem, Germany

Start of construction: 12th Century

End of construction: 17th Century

Accessible: yes, interior with guide

Important fact:

The castle is built on a 70-meter-high rock head. It has been family owned for more than 850 years and 33 generations and has never been destroyed in all that time.

https://www.burg-eltz.de/en/

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