Where: Meißen, Germany
Start of construction: 10th Century
End of construction: 1471-1524
Most important renovation: 19th Century
Accessible: yes
Important fact:
From 1710 to 1863, the famous Meissner Porcelain Factory was located in the castle.
Now it houses a museum about that porcelain.
https://www.albrechtsburg-meissen.de/en/home/