Greenskin Fort is a Greenskins settlement building in Total War: Warhammer. Orcs like a good fort, it makes them feel important when they can shout and fling crap from the walls.
Greenskin forts are mostly made from the ruins of Dwarf keeps, their founders long-since vanquished. The Orcs know this really winds up the stunties, so they revel in it. �Improvements� to the Dwarfen structures are always made in the form extra platforms, spikey bitz and carved faces of the Orc Gods. Not all forts use Dwarf foundations, there are some notable ramshackle structures in the Badlands with walls made entirely of bones and wood, but these are in the minority for obvious reasons of build quality.