Angel statue in the Memorial Grove in section A of Prospect Hill Cemetery in Washington, D.C., in the United States in 2014. Prospect Hill Cemetery was added to the Register of Historic Places of the District of Columbia (a listing of historic sites maintained by the city) in 2005. The Memorial Grove was established in 2009. The angel statue formerly stood atop a grave marker in the cemetery, but fell down. It was re-established in the Memorial Grove on a pedestal.