Wyl is the seat of House Wyl in Dorne. It is located east of the Boneway at the mouth of the River Wyl at the Sea of Dorne.
House Wyl has long fought against the marcher lords of the Dornish Marches to the north. The family has tunneled beneath their castle to link caverns for greater defense.
During the First Dornish War, the Wyls took refuge in their caverns after King Aegon I Targaryen attacked their mountain fastnesses with Balerion.