Larz Anderson House

Anderson House
Exterior view of Anderson House in 2023
Location2118 Massachusetts Avenue, NW
Washington, D.C.
Coordinates38°54′38.6″N 77°2′51.7″W / 38.910722°N 77.047694°W / 38.910722; -77.047694
Built1902–1905
ArchitectLittle & Browne
Architectural styleBeaux-Arts
Part ofMassachusetts Avenue Historic District (ID74002166)
NRHP reference No.71000993
Significant dates
Added to NRHPApril 7, 1971
Designated NHLJune 19, 1996
Designated DCIHSNovember 8, 1964

Anderson House, also known as Larz Anderson House, is a Gilded Age mansion located at 2118 Massachusetts Avenue, NW, on Embassy Row in the Dupont Circle neighborhood of Washington, D.C. It now houses the Society of the Cincinnati's international headquarters and a research library on 17th- and 18th-century military and naval history and the art of war. It is also open to the public as a historic house museum about life in Washington in the early 20th century.