Floors Castle, in Roxburghshire, south-east Scotland, is the seat of the Duke of Roxburghe. Despite its name it is an estate house rather than a fortress.
It was built in the 1720s by the architect William Adam for Duke John, possibly incorporating an earlier tower house.
In the 19th century it was embellished with turrets and battlements by William Playfair for Duke James. Floors has the common 18th-century layout of a main block with two symmetrical service wings.
Floors Castle stands by the bank of the River Tweed and overlooks the Cheviot Hills to the south.