Riversdale, a National Historic Landmark, is a restored, five-part, stucco-covered brick plantation home built between 1801 and 1807. Construction of this elegant manor house was begun by Henri Stier, a Flemish aristocrat, and was completed by his daughter Rosalie and her husband George Calvert, grandson of the fifth Lord Baltimore. The Federal style mansion has particularly fine interior decorative detail. Numerous nationally significant figures later lived there. Riversdale was also home to the Plummer Family.