Fazl Mosque, Washington, D.C.

The Embassy of Mauritania in Washington, D.C. is the Islamic Republic of Mauritania's diplomatic mission to the United States. It is located at 2129 Leroy Place N.W. in Washington, D.C.'s Kalorama neighborhood.The Ambassador is Mohamedoun Daddah.

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

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 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 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 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.

The Codman–Davis House is a four-story, red brick, 1906, classical revival house in Washington, D.C. at 2145 Decatur Place NW (in the Kalorama neighborhood). It was designed by Ogden Codman Jr. for his cousin, Martha Codman of Washington, DC and Newport, Rhode Island. She also commissioned his design of the Codman Carriage House and Stable, built nearby. It is listed on the National Register of Historic Places. In 1995 the house served as the residence of the Thai ambassador.

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

Decatur Terrace, commonly known as the Spanish Steps, is a terrace in the Kalorama neighborhood of Washington, D.C., located on 22nd Street NW, connecting Decatur Place NW and S Street NW. Formally named Decatur Terrace Steps and Fountain, the nickname is a reference to the Spanish Steps in Rome. Washington's Spanish Steps are listed in the National Register of Historic Places as a contributing feature in the Sheridan-Kalorama Historic District, designated in 1989.

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.

Meeting House of the Friends Meeting of Washington (Friends Meeting House) is a historic Quaker meeting house at 2111 Decatur Place in NW Washington, DC. The Colonial Revival building was added to the National Register of Historic Places in 1990.