I meant to post this a while back but forgot until now. I went to visit Malbork Castle in Poland and it is a beast. Definitely the largest castle I have ever visited, and the centre of power for the Teutonic Knights in Europe for a long time.

The map
Malbork Castle-malborkmap.jpg

The model
Malbork Castle-malborkmap2.jpg

The real thing
Malbork Castle-malbork3.jpg