My third castle type building is much better than the early ones.
This one is built on a server owned by a guy on the Serious Sam forums.
It's not finished yet, but it's getting close.
This is the shack i lived in while digging the foundation for the castle.
Yes it has a real foundation down to rock
The building extends significantly below ground and has a functioning farm in the basement.
Greenstone Tower:
The foundation and walls near the ground are 3x thick, stone, gravel in the middle, then stone again.
(In accordance with authentic period wall building techniques.) All of the above ground facing is in stone rather than cobble.
except the central column of the second floor is done in Mossy Cobblestone.
A span of fenced bridge in the front limits aproach to the door to straight on. No ambushes as you step out.
The battlements have downward facing arrow slits that allow full coverage of the entire wall span.
The island is fenced with cactus, or bordered by ground too steep to climb.