1010 Mass

The Morrison and Clark Houses (also known as the Soldiers', Sailors', Marines', and Airmen's Club) are historical buildings, located at 1013–1015 L Street, Northwest, Washington, D.C., in the Mount Vernon Square neighborhood. The Morrison-Clark Inn is recognized as a Historic Hotel of America by the National Trust for Historic Preservation

The Samuel Gompers Memorial is a bronze statue in Washington, D.C., listed on the National Register of Historic Places. It is located at the intersection of 10th Street, L Street, and Massachusetts Avenue, Northwest, Washington, D.C. The statue is in memory of Samuel Gompers, an English-born American cigar maker, labor union leader and a key figure in American labor history.

Edmund Burke is a bronze full length statue of Irish statesman, author, orator, political theorist and philosopher Edmund Burke by British artist James Havard Thomas. The original is in Bristol, England, with a second cast on Massachusetts Avenue at 11th and "L" Streets, NW, in Washington, D.C., United States.

The Cato Institute is an American libertarian think tank headquartered in Washington, D.C. It was founded in 1977 by Ed Crane, Murray Rothbard, and Charles Koch, chairman of the board and chief executive officer of Koch Industries. Cato was established to have a focus on public advocacy, media exposure and societal influence. According to the 2017 Global Go To Think Tank Index Report (Think Tanks and Civil Societies Program, University of Pennsylvania), Cato is number 15 in the "Top Think Tanks Worldwide" and number 10 in the "Top Think Tanks in the United States".The Cato Institute is libertarian in its political philosophy, and advocates a limited role for government in domestic and foreign affairs as well as a strong protection of civil liberties. This includes support for lowering or abolishing most taxes, opposition to the Federal Reserve system, the privatization of numerous government agencies and programs including Social Security, the Affordable Care Act and the United States Postal Service, demilitarization of the police, along with adhering to a non-interventionist foreign policy.

The Carpenters Building (also known as United Brotherhood of Carpenters and Joiners-Local 132) is an historic office building located at 1010 10th Street (also known as 1001 K Street, N.W.) Northwest, Washington, D.C., in the Mount Vernon Square neighborhood.

Asbury United Methodist Church, originally known as Asbury Chapel, is a historic church in Northwest, Washington, D.C. built on the corner of 11th and K Streets. It was placed on the District of Columbia Register of Historic Places on November 1, 1986. It was added to the National Register of Historic Places in 1986. In 2003, the National Park Service approved the listing of Asbury on the National Underground Railroad Network to Freedom.

Atlas Network, formerly known as the Atlas Economic Research Foundation, is a non-governmental 501(c)(3) organization based in the United States that provides training, networking and grants for libertarian and free-market groups around the world. Atlas Network partners with about 500 organizations in nearly 100 countries.The 2019 and 2020 Global Go To Think Tank Index Report, published by the University of Pennsylvania, ranked the Atlas Network as 54th among the "Top Think Tanks in the United States".

The Henley Park Hotel is a 96-room boutique style hotel located on 10th street and Massachusetts Avenue NW in Washington, DC. It features an upscale restaurant, The Tavern, and is noted for its unique architecture. The Henley Park Hotel is a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation.

Michele's is a restaurant in Washington, D.C. The restaurant serves American cuisine within The Eaton Hotel. Matt Baker is the chef.

The ASPIRA Association is an American nonprofit organization whose mission is to "empower the Latino community through advocacy and the education and leadership development of its youth". ASPIRA's national office is in Washington, D.C., and it has affiliates in Connecticut, Delaware, Florida, Illinois, Massachusetts, New Jersey, New York, Pennsylvania, and Puerto Rico.Former ASPIRA club members, or ASPIRANTES, as they are known, include ACLU's Anthony Romero, former Bronx Borough President and New York City democratic mayoral nominee Fernando Ferrer, Illinois politician Billy Ocasio and actor Jimmy Smits.

901 New York Avenue NW is a mid-rise Postmodern high-rise located in Downtown Washington, D.C., in the United States. The structure was developed by Boston Properties in an effort to help to revitalize the Mount Vernon Square neighborhood, and was completed in 2005. It is located on a roughly triangular parcel bounded by New York Avenue NW, K Street NW, and 10th Street NW, and is north of the CityCenterDC mixed-use residential, office, and retail project. The triangular area was originally home to Victorian housing but in 1977, the city used eminent domain to purchase the area southwest of Mount Vernon Square itself, and over the next few years, the homes and businesses on these blocks were razed. In the 1980s, Golub Realty and Willco Construction purchased the site and proposed an 11-floor office block. They sold it to Peterson Co., who sold it to Monument Realty in May 1999. Monument Realty had envisaged building either an office and retail complex, or a 1,000-room hotel. They finally sold it to Boston Properties for $43.2 million in October 2000. Boston Properties closed the parking lot on the site in late August 2002, and began construction of the building the following month. The architectural height of the building is 140 feet (43 m), although the height of the main roof is just 130.86 feet (39.89 m) and the height of the top floor is 118.36 feet (36.08 m). It has 11 stories, and a four-story underground parking garage. Reports of the building's interior space vary widely, with 540,000 square feet (50,000 m2) the most recently reported by the mainstream media. The facade is of polished granite and precast concrete in two colors. An atrium three stories in height with 36-foot (11 m) long arched steel trusses forms the lobby. Two very small parks exist on the triangular parcel of land, which are owned by the National Park Service. Acadiana, a 185-seat upscale restaurant on the ground floor which served Louisiana-and Cajun-style seafood was cited by Esquire magazine as one of the best new restaurants in the entire United States in 2006. The restaurant closed in December 2018, and as of January 2019 no replacement tenants have been announced. Miami-based Yardbird Southern Table & Bar has taken Acadiana's former space in April 2021.

The Church of the Ascension and Saint Agnes is an Episcopal church building located at 1215 Massachusetts Avenue in Northwest Washington, D.C., US. The current structure built in 1874 as the Church of the Ascension was added to the National Register of Historic Places in 1984. In the late 1940s, the Church of the Ascension merged with the nearby St. Agnes Episcopal Church and adopted its present name, under which it has continued as an active parish in the Episcopal Diocese of Washington.