Mistwood is a castle in the Stormlands, the region controlled by House Baratheon of Storm's End. The castle is located in a wooded area south of Storm's End.
In the books
In the A Song of Ice and Fire novels Mistwood is the seat of House Mertyns. Their only claim to fame is that they once produced a famous member of the Kingsguard, Ser Michael Mertyns, the White Owl.
Mistwood is located on Cape Wrath, in the Rainwood. It is located inland from the Sea of Dorne.