Mount Vernon Square

The Carnegie Library of Washington D.C., also known as Central Public Library, now known as the Apple Carnegie Library, is situated in Mount Vernon Square, Washington, D.C. Donated to the public by entrepreneur Andrew Carnegie, it was dedicated on January 7, 1903. It was designed by the New York firm of Ackerman & Ross in the style of Beaux-Arts architecture. It was the first Carnegie library in Washington, D.C. and D.C.'s first desegregated public building.It was listed on the National Register of Historic Places, as "Central Public Library", in 1969.It was used as the central public library for Washington, D.C. for almost 70 years before it became overcrowded. The central library was then moved to Martin Luther King Jr. Memorial Library. After being shut down for ten years, it was renovated as part of University of the District of Columbia.In 1999, it became the headquarters for the Historical Society of Washington, D.C. The City Museum of Washington opened in the library in May 2003, but closed less than two years later.In 2014, Events DC twice sought to move the International Spy Museum into the library, but failed to win historic preservation approval.In September 2016, Apple Inc. proposed renovating the library into D.C.'s second Apple Store location. In December 2016, Events DC announced an agreement with the company for conversion of the space into a new store designed by Foster and Partners. The building was renamed the Apple Carnegie Library, and the Apple Store within opened on May 11, 2019. Apple hosts free daily sessions focused on photography, filmmaking, music creation, coding, design and more. On October 9, 2019 the first episode of Oprah's Book Club, a television series produced by Apple, was filmed with a live audience in the Library. The episode premiered on November 1 of the same year.The building also now houses the DC History Center on the second floor, and the Carnegie Gallery (featuring historic photographs and documents about the origins and history of the building) in the basement.

The Lingua is a sculpture by American artist Jim Sanborn located at the Walter E. Washington Convention Center.

The American Federation of Labor Building is a seven-story brick and limestone building located along Massachusetts Avenue in Washington, D.C. Completed in 1916, it served as the headquarters of the American Federation of Labor until 1955, when it merged with the Congress of Industrial Organizations to form the AFL-CIO. It remained a trade union headquarters until 2005, when it was sold to the developers of the Washington Marriott Marquis hotel. The building exterior, the only historical element remaining of the building, is now part of that structure. It was declared a National Historic Landmark in 1974. It housed the American Federation of Labor for 40 years.

Marriott Marquis Washington, DC is a luxury hotel located on Massachusetts Avenue NW, in NW, Washington, D.C., United States. The hotel is connected to the Walter E. Washington Convention Center across 9th Street NW via an underground concourse. The Washington Marriott Marquis is considered a "convention center headquarters hotel", designed both to provide lodging for attendees at the Walter E. Washington Convention Center across the street, and to augment the convention center by providing smaller, more versatile meeting rooms. The hotel has 100,000 square feet (9,300 m2) of meeting room space, which includes a 30,000-square-foot (2,800 m2) main ballroom and two smaller 10,800-square-foot (1,000 m2) ballrooms. The building is topped by a 18,800-square-foot (1,750 m2) glass-encased penthouse, and a 5,200-square-foot (480 m2) outdoor event terrace. The hotel is owned by Capstone Development, the District of Columbia, ING Clarion Real Estate Investment, Marriott International, and Quadrangle Development Corporation. The operator is Marriott International. It opened on May 1, 2014, and has 1,175 rooms (which includes 49 suites), a lobby with multi-story atrium, and four dining outlets on the first floor. The hotel has 14 stories above ground, and four stories below.

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.

1000 Block of Seventh Street and 649–651 New York Avenue NW are a collection of two and three story buildings in Washington D.C. which were listed on the National Register of Historic Places in 1984. They are located across the street from the Walter E. Washington Convention Center and adjacent to Mount Vernon Square, also listed on the NRHP. The buildings were mostly built in the 1870s for a German immigrant population. They have remained mostly intact since they were built even though the neighborhood around them has changed dramatically.

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.

The R Street Institute is an American non-partisan think tank headquartered in Washington, D.C. The Institute's stated mission is to "engage in policy research and outreach to promote free markets and limited, effective government." R Street was established in 2012 when its founders split from the Heartland Institute out of disagreement with Heartland's public denial of the scientific consensus on climate change. In addition to its Washington headquarters, R Street has branch offices in Tallahassee, Florida; Columbus, Ohio; Sacramento, California; Boston, Massachusetts; and Round Rock, Texas.

The United States Mint is a bureau of the Department of the Treasury responsible for producing coinage for the United States to conduct its trade and commerce, as well as controlling the movement of bullion. The U.S. Mint is one of two U.S. agencies that produce money in the case of minting coinage; the other is the Bureau of Engraving and Printing, which prints paper currency. The first United States Mint was created in Philadelphia in 1792, and soon joined by other centers, whose coins were identified by their own mint marks. There are currently four active coin-producing mints: Philadelphia, Denver, San Francisco, and West Point.

The Washington Convention Center in Washington, D.C. was a convention center located one block southwest at 909 H Street NW, occupying the city block bounded by New York Avenue, 9th Street, H Street, and 11th Street. Construction on the center began in 1980, and it opened on December 10, 1982. At 800,000 square feet (74,000 m2), it was the fourth largest facility in the United States at the time. However, during the 1980s and 1990s, numerous larger and more modern facilities were constructed around the country, and by 1997 the Washington Convention Center had become the 30th largest facility.After being replaced by the new Walter E. Washington Convention Center, the old convention center was demolished via explosive devices at approximately 7:30 a.m. on December 18, 2004, the first implosion in the city since the Capital Garage was razed in 1974. Until 2011, the 10-acre (40,000 m2) site was a municipal parking lot that was also used as the intercity bus terminal for Megabus and BoltBus. The site was also used for special events such as Cirque Du Soleil and the home of the Washington Kastles Stadium. However, construction of a new $950 million complex called CityCenterDC on the site began in March 2011.

CityCenterDC is a mixed-use development consisting of two condominium buildings, two rental apartment buildings, two office buildings, a luxury hotel, and public park in downtown Washington, D.C. It encompasses 2,000,000 square feet (190,000 m2) and covers more than five city blocks. The $950 million development began construction on April 4, 2011, on the site of the former Washington Convention Center—a 10.2-acre (4.1 ha) site bounded by New York Avenue NW, 9th Street NW, H Street NW, and 11th Street NW. Most of the development was completed and open for business by summer 2015. The luxury hotel Conrad Washington, DC, opened in February 2019.The development is one of the largest 21st-century downtown projects in the United States, and the largest urban development on the East Coast of the United States until the December 2012 groundbreaking of Manhattan's Hudson Yards. It has been described as "a modern-day Rockefeller Center" by Hector Falconer at The New York Times. The Washington Post architectural critic Steven Pearlstein, writing in 2003, said the project will "reshape" downtown D.C.The D.C. deputy mayor for economic development characterized the project in 2004 as "the capstone of an effort to move the center of energy from the Mall to downtown". D.C. Mayor Anthony A. Williams said in 2005 it was "the crowning achievement in the rebirth of our downtown". In 2007, D.C. Mayor Adrian Fenty called the development a "live, work and play environment unlike anywhere else in D.C."Metro Center and Gallery Place, two of the city's busiest Metro stations, are within three blocks of the development.

The Walter E. Washington Convention Center is a 2.3-million-square-foot (210,000 m2) convention center located in Washington, D.C., owned and operated by the city's convention arm, Events DC. Designed in a joint venture by the Atlanta-based architecture firm Thompson, Ventulett, Stainback & Associates, Washington, DC- based architects Devrouax & Purnell Architects Planners PC and Mariani and Associates, the convention center is located in a superblock bounded by Mount Vernon Square and 7th, 9th and N streets, N.W. It is served by the Mount Vernon Square station on the Yellow and Green lines of the Washington Metro. It was completed in 2003.