Embassy of Cuba, Washington, D.C.

The Embassy of the Republic of Poland in Washington, D.C. (Polish: Ambasada Rzeczypospolitej Polskiej w Waszyngtonie) is the diplomatic mission of the Republic of Poland to the United States of America. The chancery is located at 2640 16th Street NW, Washington, D.C.Marek Magierowski is the ambassador since November 2021.

Embassy of Lithuania in Washington, D.C., is the diplomatic mission of the Republic of Lithuania to the United States. It is located at 2622 16th Street Northwest, Washington, D.C., in the Adams Morgan neighborhood.

Warder Mansion (also known as Warder-Totten House) is an apartment complex at 2633 16th Street Northwest, in the Meridian Hill Park neighborhood of Washington, D.C. It is the only surviving building in the city designed by architect Henry Hobson Richardson. In an early example of preservation commitment, the building was saved from demolition in the 1920s by being disassembled and moved 1.5 miles (2.4 km) north of its original site. In the 1990s, the Warder-Totten House's prospects for survival again looked bleak, but the building was saved a second time.

Antioch School of Law was a law school in Washington, D.C. which specialized in public advocacy. The school now operates as the University of the District of Columbia David A. Clarke School of Law (UDC-DCSL).The school was located in the historic Warder Mansion on 16th Street NW and its law library a block away on Crescent Place NW in the Adams-Morgan neighborhood of Washington, D.C., near Meridian Hill Park.

The Pink Palace, also known as the Mrs. Marshall Field House and the Inter-American Defense Board, is a historic house located in the Adams Morgan neighborhood in Washington, D.C. It has been listed on the National Register of Historic Places since 1991. George Oakley Totten Jr. was the architect for the structure that was completed in 1906. Additions were made to the house in 1912 and 1988.

All Souls Church, Unitarian is a Unitarian Universalist church located at 1500 Harvard Street NW at the intersection of 16th Street, Washington, D.C., roughly where the Mt. Pleasant, Columbia Heights, and Adams Morgan neighborhoods of the city meet. The design of its current building, completed in 1924, is based on St. Martin's-in-the-Fields in London. It was listed on the National Register of Historic Places in 2020. All Souls, a member of the Unitarian Universalist Association of Congregations, describes its theology as having evolved from a liberal Christian tradition into a "rich pluralism."

Josephine Butler Parks Center is an historic house, located at 2437 15th Street, Northwest, Washington, D.C., in the Meridian Hill neighborhood. It was listed on the U.S. National Register of Historic Places as House at 2437 Fifteenth Street, NW.

The Park Tower is an historic structure located in the Adams Morgan neighborhood of Washington, D.C. It has been listed on the District of Columbia Inventory of Historic Sites since 1988 and it was listed on the National Register of Historic Places in 1989.

The Embassy of Ecuador in Washington, D.C., is the Republic of Ecuador's diplomatic mission to the United States. It is located at 2535 15th Street N.W. in Washington, D.C.'s Columbia Heights neighborhood. The current building has been used as an embassy since the 1960s.The building was designed by architect George Oakley Totten, Jr. (1866-1939), who studied at the Ecole des Beaux-Arts and who also designed the Old Hungarian Embassy building next door at 2537 Fifteenth St.: 13 The embassy also operates Consulates-General in Atlanta, Chicago, Houston, Los Angeles, Miami, Minneapolis, New Haven, New Orleans, New York City, Newark, Phoenix and San Francisco. The Chargé d'Affairs is Efraín Baus.The chancery suffered damage in the 2011 Virginia earthquake on August 24, 2011. The earthquake caused cracks on internal walls and collapsed three of the building's chimneys. The chimney collapse damaged two cars.On September 27, 2017, a two alarm fire broke out on the roof of the chancery.

Columbia Road is a street in Washington, D.C., that forks from Connecticut Avenue north of Dupont Circle, and branches north and east through 16th Street to the McMillan Reservoir. Along its route, it marks the southern border of the Kalorama Triangle neighborhood, the principal east/west passage through the Adams Morgan neighborhood, and is one of the primary thoroughfares in the Columbia Heights neighborhood. In Adams Morgan, it is bordered by a great deal of street-level retail, constituting (with 18th Street) the main commercial area within Adams Morgan.

Meridian Mansions, also known as The Envoy, is an historic structure located in the Adams Morgan neighborhood in the Northwest Quadrant of Washington, D.C. A.H. Sonnemann was the architect for what was considered the city's finest apartment hotel when it opened in 1918. The building has been home to members of Congress and diplomats over the years. The lobby contains marble columns and elaborate ornamental molding. At one time the building featured roof pavilions and lamp standards, which were removed around 1963. It was renovated in 1981 and it was listed on the National Register of Historic Places in 1983. The building is most notable due to its connection to the establishment of Czechoslovakia as an independent nation. Tomáš Garrigue Masaryk, the founder and first President of Czechoslovakia, resided here between July and November 1918. The first Czechoslovakian national flag to be created was flown from the building on October 18, 1918.

The David White House is a historic house at 1459 Girard Street NW in Washington, D.C. A National Historic Landmark, it was the home of geologist David White (1862–1935) from 1910 to 1925. White had a longtime association with the United States Geological Survey (USGS), and performed groundbreaking research on peat and petroleum geology.