Embassy of Mauritania, Washington, D.C.

The Mauritanian ambassador in Washington, D. C. is the official representative of the Government in Nouakchott to the Government of the United States.

The Fazl Mosque in Washington, D.C. was established by the Ahmadiyya Muslim Community in 1950 and is the first mosque in the U.S. capital of Washington, D.C. Its full title is the American Fazl Mosque, which helps to distinguish it from its sister mosque, the Fazl Mosque, London, both of which were the first mosques in the capitals of the U.S. and the U.K., respectively. Located a few minutes from the White House, and neighboring several embassies, Fazl Mosque opened seven years prior to the Islamic Center of Washington and is the longest serving mosque in the nation's capital.Sir Zafrullah Khan, who in addition to serving as president of the United Nations General Assembly and President of the International Court of Justice at the Hague, was a companion of Mirza Ghulam Ahmad (1835–1908), as well as a notable scholar of Islam. The mosque served as the headquarters of the Ahmadiyya movement in the United States from 1950 until 1994, when it was moved to Baitur Rehman Mosque in Silver Spring, Maryland.The American Fazl Mosque was built as a private residence in 1912. The Colonial Revival-style building is designated as a contributing property to the Sheridan-Kalorama Historic District, listed on the National Register of Historic Places.

The Bissau-Guinean ambassador in Washington, D. C. is the official representative of the Government in Bissau to the Government of the United States and concurrently accredited in Mexico City and Ottawa.

The Russian Cultural Center (Russian: Российский центр науки и культуры в Вашингтоне) is a museum and building in Washington, D.C., supporting Russian culture in the United States and preserving its causes and beliefs. It calls itself, "the official home of Russian culture in the United States," and hosts public events featuring visiting Russian musicians and artists to foster better relations and understanding between the U.S. and Russia. The center is operated by Rossotrudnichestvo, an autonomous agency of the Russian Foreign Ministry.The building was a private residence before it was purchased by the Soviet government in 1957. It was initially used as a school for the children of embassy staff, then housed the Soviet consulate in the 1970s and 1980s. In 1998, the building was designated as the Russian Cultural Center by a bilateral agreement. The center opened on December 10, 1999, with an announcement by Valentina Tereshkova, the first woman in space.Since at least 2001, the center has organized all-expenses-paid cultural exchange trips to Russia for young Americans. The trips included lodging at luxury hotels and meetings with Russian officials.

The Embassy of Guinea in Washington, D.C. is the Republic of Guinea's diplomatic mission to the United States. It is located at 2112 Leroy Place Northwest, Washington, D.C., in the Kalorama neighborhood. The Ambassador is Blaise Chérif.

The Churchill Hotel Near Embassy Row is a hotel located at 1914 Connecticut Avenue NW in Washington, D.C., United States. The Beaux-Arts style building was erected in 1902 as The Highlands apartment house, designed by local architect Arthur B. Heaton. It was later renovated into a hotel, but still kept some of its historic features. According to the Churchill Hotel, its rooms contain elements of the original building. The Churchill is a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation.

Our Lady Queen of the Americas is a Roman Catholic church serving the Hispanic community in the Washington, DC area.

The Moldovan ambassador in Washington, D. C. is the official representative of the Government in Chișinău to the Government of the United States.

The Embassy of Moldova in Washington, D.C. is the diplomatic mission of the Republic of Moldova to United States. It is located at 2101 S Street, Northwest, Washington, D.C. in the Kalorama neighborhood.The embassy provides consular services to Moldova citizens residing or traveling in the US and Canada.

The Alliance Française of Washington is a non-profit, non governmental cultural and educational American association. Its mission is to promote the French language and Francophone cultures in the Capital Region, as well as intercultural exchanges, within the context of the international network of the Alliance Française

The Embassy of Barbados in Washington, D.C. is the primary diplomatic mission of Barbados to the United States of America, and the Organisation of American States (OAS). It is maintained by Ministry of Foreign Affairs and Foreign Trade Barbados. The present Ambassador is Noel Anderson Lynch, appointed on October 1, 2018, who replaced Selwin Charles Hart.It is located to the East of the official Embassy Row area at 2144 Wyoming Avenue N.W. in Washington, D.C.'s Kalorama neighborhood.

The Embassy of Costa Rica in Washington, D.C. is the diplomatic mission of Costa Rica to the United States. It is located at 2114 S Street Northwest, Washington, D.C. in the Kalorama neighborhood.The embassy also operates Consulates-General in Atlanta, Austin, Texas, Chicago, Miami, New Orleans, Los Angeles, Philadelphia, San Antonio, San Diego, San Francisco, Tampa, and New York City.The ambassador is Catalina Crespo Sancho.In 1974, the Embassy received one of the three pre-Columbian stone spheres of Costa Rica that came to the United States as part of an agreement that had been negotiated in 1971 between American art specialist Samuel Adams Green and the Museo Nacional de Costa Rica together with the Costa Rican Ministry of Foreign Affairs and Ministry of Culture. The two larger spheres went to Fairmount Park in Philadelphia, where they were displayed in 1976 together with other monumental sculptures, before going into storage at the warehouses of the Fairmont Park Association. The one in Washington D.C. is displayed in the streetside yard of the Embassy building, as a symbol of national identity.