This castle is an side-project of me, build in 4days.

Its primary purpose is as jail for an yet unnamed server(which has closed now)
The dungeons have a few places which are unfinished, but I wont do anymore on this project,..

You can use this building for your server. licensed by CC-by-Sa - so you can modify it an make a sign of the creator if it isn't already there.

The funny thing of it is that when you have passed the gate, you have managed to jail yourself because
the gate will close itself every time you want to pass through it. Additional there are some other redstone devices, for e.g. a huge section of the ground of the portal of the building will vanish every time you try to walk in, and even when you have managed to stay in the building it can be tricky to find the path through the stairs.

Additional Notes