Plan, are in the process of being implemented. In the 1950s, the Belin family, owners of the neighboring estate, Evermay, gave the NSCDA the property lying directly to the east and adjacent to Dumbarton House. Subsequently, noted Virginia landscape architect M. Meade Palmer designed the East Garden, and in 2010, Georgetown landscape architect Guy Williams of DCA Landscape Architects, Inc., created and supervised the installation of an herb garden within the East Garden. Today, Dumbarton House offers both guided and self-guided tours, as well as concerts, lectures, special exhibitions, and other cultural events. It also has a large ballroom opening onto a walled terrace, providing a site that can be rented for weddings or other events. References External links and sources External links Dumbarton House website Georgetown (Washington, D.C.) Houses on the National Register of Historic Places in Washington, D.C. Federal architecture in Washington, D.C. Historic house museums in Washington, D.C. National Society of the Colonial Dames of America Women in Washington, D.C.