Buildings at 1000 Block of Seventh Street, and 649–651 New York Avenue NW

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 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.

Mount Vernon Square is a city square and neighborhood in the Northwest quadrant of Washington, D.C. The square is located where the following streets would otherwise intersect: Massachusetts Avenue NW, New York Avenue NW, K Street NW, and 8th Street NW.

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.

New York Avenue is a diagonal avenue radiating northeast from the White House in Washington, D.C. to the border with Maryland. It is a major east–west route in the city's Northwest and Northeast quadrants and connects downtown with points east and north of the city via Cheverly, Maryland, the John Hanson Highway, the Baltimore–Washington Parkway, and eventually, Interstate 95.

Mount Vernon Square is a Washington Metro station in Washington, D.C., on the Green and Yellow Lines.

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.

The Sixth & I Historic Synagogue is a non-denominational, non-membership, non-traditional Jewish synagogue located at the corner of Sixth Street and I Street, NW in the Chinatown neighborhood of Washington, D.C. It is one of the oldest synagogues in the city. In addition to hosting religious services for different Jewish denominations, the synagogue hosts many lectures, concerts, and art exhibitions for the general public.

The Northern Liberty Market, later called Convention Hall Market and Center Market, was located on the east side of 5th Street NW, between K and L, in the present-day Mount Vernon Triangle neighborhood of Washington, D.C. It operated from 1875 to 1963.

dLeña is a Latin American / Mexican restaurant in Mount Vernon Triangle, Washington, D.C.