Floors Castle, on the western outskirts of Kelso, south-east Scotland, is the seat of the Duke of Roxburghe. It was built in the 1720s by architect William Adam for the 1st Duke, incorporating an earlier tower house. In the 19th century it was embellished with turrets and battlements by William Playfair for the 6th Duke. Floors Castle lies on the River Tweed and overlooks the Cheviot Hills.