DAR Constitution Hall is a concert hall located in Washington, D.C. It was built in 1929 by the Daughters of the American Revolution to house its annual convention when membership delegations outgrew Memorial Continental Hall. Later, the two buildings were connected by a third structure housing the DAR Museum, administrative offices, and genealogical library. DAR Constitution Hall is still owned and operated by the National Society of Daughters of the American Revolution. It was designated a National Historic Landmark in 1985.