The Grandison D. Royston House is a historic house at Columbus and Water Streets in Historic Washington State Park, Washington, Arkansas. It is a single-story wood-frame structure, about 55 feet (17 m) wide and 51 feet (16 m) deep, with a hip roof pierced by two chimneys with corbelled tops. The main entry is centered under a projecting gable-roof porch, and is framed by sidelights and transom windows. The porch is supported at the front by pairs of square columns with moulded capitals and a square plinth. At the back of the house is a shed-roof addition which housed the kitchen. The interior of the main block is divided into four rooms, two on either side of a large central hall.[2]
The house was built c. 1833 by Grandison Delaney Royston, then at the start of a long and distinguished career in Arkansas politics, serving in the state legislature, as United States District Attorney, and as a state militia general during the American Civil War.[2]
