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The Army Medical Museum and Library (AMML) of the U.S. Army was a large brick building constructed in 1887 at South B Street (now Independence Avenue) and 7th Street, SW, Washington, D.C., which is directly on the National Mall. It was designated a National Historic Landmark in 1965 and added to the National Register of Historic Places in 1966. The building was demolished in 1969, and the collections at the focus of the landmark designation were dispersed.

The National Air and Space Museum (NASM) of the Smithsonian Institution, is a museum in Washington, D.C., in the United States dedicated to human flight and space exploration. Established in 1946 as the National Air Museum, its main building opened on the National Mall near L'Enfant Plaza in 1976. In 2018, the museum saw about 6.2 million visitors, making it the fifth-most-visited museum in the world, and the second-most-visited museum in the United States. In 2020, due to long closures and a drop in foreign tourism caused by the COVID-19 pandemic, museum attendance dropped to 267,000.The museum is a center for research into the history and science of aviation and spaceflight, as well as planetary science and terrestrial geology and geophysics. Almost all of its spacecraft and aircraft on display are original primary or backup craft (rather than facsimiles). Its collection includes the Apollo 11 Command Module Columbia, the Friendship 7 capsule which was flown by John Glenn, Charles Lindbergh's Spirit of St. Louis, the Bell X-1 which broke the sound barrier, the model of the starship Enterprise used in the science fiction television show Star Trek: The Original Series, and the Wright brothers' Wright Flyer airplane near the entrance. The museum operates a 760,000-square-foot (71,000 m2) annex, the Steven F. Udvar-Hazy Center, at Dulles International Airport. It includes the Mary Baker Engen Restoration Hangar, which houses the museum's restoration and archival activities. Other preservation and restoration efforts take place at the Paul E. Garber Preservation, Restoration, and Storage Facility in Suitland, Maryland. The museum's main building on the National Mall is undergoing a seven-year, $360M renovation that started in 2018, during which some of its spaces and galleries are closed.

The Hirshhorn Museum and Sculpture Garden is an art museum beside the National Mall in Washington, D.C., United States. The museum was initially endowed during the 1960s with the permanent art collection of Joseph H. Hirshhorn. It was designed by architect Gordon Bunshaft and is part of the Smithsonian Institution. It was conceived as the United States' museum of contemporary and modern art and currently focuses its collection-building and exhibition-planning mainly on the post–World War II period, with particular emphasis on art made during the last 50 years.The Hirshhorn is situated halfway between the Washington Monument and the US Capitol, anchoring the southernmost end of the so-called L'Enfant axis (perpendicular to the Mall's green carpet). The National Archives/National Gallery of Art Sculpture Garden across the Mall, and the National Portrait Gallery/Smithsonian American Art building several blocks to the north, also mark this pivotal axis, a key element of both the 1791 city plan by Pierre L'Enfant and the 1901 MacMillan Plan.The building itself is an attraction, an open cylinder elevated on four massive "legs," with a large fountain occupying the central courtyard.

Post-Balzac is a bronze sculpture by Judith Shea created in 1991 in an edition of three copies. It was exhibited at the White House, and the John and Mary Pappajohn Sculpture Park.

The Federal Aviation Administration (FAA) is a U.S. federal government agency within the U.S. Department of Transportation which regulates civil aviation in the United States and surrounding international waters.: 12, 16  Its powers include air traffic control, certification of personnel and aircraft, setting standards for airports, and protection of U.S. assets during the launch or re-entry of commercial space vehicles. Powers over neighboring international waters were delegated to the FAA by authority of the International Civil Aviation Organization. The FAA was created in August 1958 (1958-08) as the Federal Aviation Agency, replacing the Civil Aeronautics Administration (CAA). In 1967 the FAA became part of the newly formed U.S. Department of Transportation and was renamed the Federal Aviation Administration.

Kiepenkerl was originally a sandstone statue of a travelling merchant created by August Schmiemann in Münster, Germany in 1896. Destroyed in World War II, it was re-created in cast metal by Albert Mazzotti Jr in 1953. The statue now stands in a small square in the Old Quarter of Münster. In 1987 American sculptor Jeff Koons created a replica of the design in polished cast stainless steel.

For Gordon Bunshaft is a 2006 sculpture by Dan Graham, installed at the Hirshhorn Museum and Sculpture Garden in Washington, D.C., United States. The work, which refers to American architect Gordon Bunshaft, was installed by the reflection pool of the Bunshaft-designed sculpture garden at the Hirshhorn on May 30, 2008.

Sky Hooks is a painted sheet steel sculpture by Alexander Calder, constructed in 1962. It is located at the Hirshhorn Museum and Sculpture Garden.

Evocation of a Form: Human, Lunar, Spectral is an abstract bronze sculpture by Jean Arp. Modeled in 1950; it was cast in 1957.It is in the Hirshhorn Museum and Sculpture Garden.

Horse and Rider is a modern equestrian bronze sculpture by Marino Marini. Executed in 1952–1953, it is located at the Hirshhorn Museum and Sculpture Garden.After the Second World War, Marini developed a horse and rider theme, where the figure is not in control of his mount.

Clamdigger is a bronze sculpture by Willem de Kooning. It may have been inspired by "the men who dug for clams along the beaches" near his home in East Hampton, New York. It has been described as one of his "extraordinarily tactile figurative sculptures" that "seemed pulled from the primordial ooze," and "as part man, part creature of the mud and the shallows."The sculpture was modeled in clay in 1972, and cast in bronze in 1976. It was his "first large-scale bronze work."As of 2014, Clamdigger is on display in the Hirshhorn Museum and Sculpture Garden.De Kooning, known for his abstract expressionist paintings, took up sculpture later in his career, after a 1969 visit with a friend in Italy "who had a small foundry."

National Mall and Memorial Parks (formerly known as National Capital Parks-Central) is an administrative unit of the National Park Service (NPS) encompassing many national memorials and other areas in Washington, D.C. Federally owned and administered parks in the capital area date back to 1790, some of the oldest in the United States. In 1933, they were transferred to the control of the National Park Service. These parks were known as the National Capital Parks from their inception until 1965. The NPS now operates multiple park groupings in the D.C. area, including National Capital Parks-East, Rock Creek Park, President's Park, and George Washington Memorial Parkway. National Mall and Memorial Parks also provides technical assistance for the United States Navy Memorial.