1775 Massachusetts Ave NW: Brookings Institution main building (arch. Faulkner, Kingsbury & Stenhouse, 1960) 1779 Massachusetts Ave NW: Carnegie Endowment for International Peace (arch. Smith, Hinchman & Gryll, 1989), also hosting the Embassy of Papua New Guinea 1789 Massachusetts Ave NW (numbered 1785 until 2016): McCormick Apartments (arch. Jules Henri de Sibour, 1917), now American Enterprise Institute 1801 Massachusetts Ave NW: Herbert Wadsworth House (arch. George Cary, 1902), now the Sulgrave Club 15 Dupont Circle NW: Robert W. Patterson House (arch. Stanford White, 1902), now Ampeer Dupont Circle apartments 11 Dupont Circle NW: office building (1974), home of the Peterson Institute for International Economics until 2001 1500 New Hampshire Ave NW: Dupont Circle Hotel (1950) 1501 Connecticut Ave NW: commercial building (1923), now Starbucks Coffee 1913 Massachusetts Ave NW: Dupont Circle Branch of the Riggs National Bank (arch. George Nicholas Ray, 1923), now PNC 2001 Massachusetts Ave NW: apartment house (arch. Gertrude Sawyer, 1935), now Kossuth House of the Hungarian Reformed Federation of America (1935) 2007 Massachusetts Ave NW: Horace A. Taylor House (arch. George Oakley Totten, Jr., 1901) 2009 Massachusetts Ave NW: Hershell Main House, later Alice Roosevelt Longworth house (built 1881, front rebuilt 1910), now the Washington Legal Foundation 2015 Massachusetts Ave NW: Embassy Row Hotel, rebranded The Ven Embassy Row in late 2020 (arch. Fischer and Elmore, 1971) 2025 Massachusetts Ave NW: Samuel M. Bryan House (arch. W. Bruce Gray, 1885), now the Urban Alliance Foundation 2027 Massachusetts Ave NW: House (1911), now the Religious Action Center of Reform Judaism 1600 21st Street NW: D. Clinch Phillips House (arch. Hornblower & Marshall, 1897), now the Phillips Collection 2107 Massachusetts Ave NW: T. Morris Murray House (1901), now Embassy of India 2121 Massachusetts Ave NW: Richard T. Townsend House (arch. Carrère and Hastings, 1901), now the Cosmos Club 2131 Massachusetts Ave NW: George W. Barrie House (arch. Marsh & Peter, 1905), now Embassy of Estonia 2201 Massachusetts Ave NW: Frederick A. Miller House (arch. Paul J. Pelz, 1901) 2203 Massachusetts Ave NW: Emeline D. Lovett House (arch. Alexander Millar, 1890) 2205 Massachusetts Ave NW: Anna Jenness-Miller House (arch. Waddy Wood, 1920), now the National Society Daughters of the American Colonists 2207 Massachusetts Ave NW: townhouse (arch. Louis D. Meline, 1902), now Embassy of Turkmenistan 2209 Massachusetts Ave NW: townhouse (arch. Wyeth & Cresson, 1911), now Embassy of Paraguay 2211 Massachusetts Ave NW: Irene Rucker Sheridan House (arch. Wood,