Washington's oldest surviving building, this fieldstone house in the heart of Georgetown was built in 1765 by a cabinetmaker named Christopher Layman. It was used as both a residence and place of business by a succession of occupants until 1953 when it was purchased by the National Park Service. Over the next seven years, the park service conducted an extensive restoration that has preserved the building's Revolutionary-war era architecture and design. Five of the house's rooms are furnished with the simple, sturdy artifacts—plain tables, spinning wheels, and so forth—of 18th-century middle-class life. You can take a self-guided tour of the house and its lovely English-style gardens.