The
Dreadfort
The Dreadfort is a fortress, the seat of House Bolton. It is located on the banks of the Weeping Water, in the eastern half of the continent. It is ill-omened, for it is said that the Boltons still keep torture chambers and a special room where they hang the flayed skins of their enemies, including several lords of House Stark before they were defeated by them and became their vassals.
The Dreadfort is a strong fortress, with high walls and triangular merlons that look like sharp stone teeth. It's located next to a volcanic vent, which heats the castle in a similar manner to the hot springs under Winterfell.