Where: Vaassen, Netherlands

Start of construction: 14th Century

End of construction: 16th Century

Most important renovation: 20th Century

Accessible: yes

Important fact:

Around 1550, the then owner Maarten van Rossum had the ruin of the 14th century castle extended to its current appearance.

https://www.glk.nl/english/seven-castles-and-houses/cannenburch-castle/