Walls and towers
Walls, gates and the towers and galleries that defend them.
Palisade A wall of sharpened logs that blocks the way for everyone. 
Wall A solid wall of iron-banded planks that blocks the way for everyone. 
Gatehouse A fortified gate with stairs up to the wall walk. Shuts when enemies or bandits come near. 
Log Hoarding A gallery on the wall where warriors roll logs down at enemies, knocking over everyone in their path. 
Oil Hoarding A gallery on the wall where warriors pour boiling canola oil on enemies below. 
Wall Tower Joins walls on any side and leads up to the wall walk. Sees far through the fog, further from high ground. 
Ballista Tower A wall tower with a ballista on its deck. With a crew aboard, it shoots the nearest enemy in reach on its own, with a little extra range from its height. 
Trebuchet Tower A wall tower with a small trebuchet on its deck. With a crew aboard, it lobs stones at the nearest enemy in reach on its own, far past the wall.