The house was originally a red brick Tudor building but its appearance was radically altered in the 18th century when the famous architect Henry Holland was commissioned to make extensive changes. The interior of the house is generally considered its strongest asset as the Spencer family has assembled an impressive collection of portrait art including several pieces painted by the Flemish master Anthony van Dyck. The estate stable block has been converted into an exhibition devoted to the memory of Diana, Princess of Wales and provides an attractive sandstone setting that effectively offsets the imposing facade of the house. Diana is buried on a small island in the middle of a lake on the estate.