Where: Cochem, Germany

Start of construction: around 1100

End of construction: 16th Century

Most important renovation: 19th Century

Accessible: yes, interior with guide

Important fact:

Blown up by the French army in 1689 and then ruined for almost two centuries. Romantic-style reconstruction took place from 1869 to 1890.

https://reichsburg-cochem.de/?lang=en

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