(W.I.P.)Westeros

The mysterious seat of House Reed, Greywater Watch is located deep within the swamps of the Neck. The castle is said to be built on a floating island, constantly moving through the bogs, making it impossible to find unless the Reeds allow it. House Reed is one of the most loyal vassals of House Stark, and their knowledge of the swamps makes them invaluable defenders of the North. Greywater Watch is surrounded by treacherous terrain, and its people are experts in guerrilla warfare, using the swamps to their advantage against invaders.

Aerial view of a shadowy castle perched on a floating island, surrounded by murky waters and gnarled trees, with mist swirling around its stone walls under a grey sky.