Memorial to the 56 Signers of the Declaration of Independence

The Main Navy and Munitions Buildings were constructed in 1918 along Constitution Avenue (then known as B Street) on Washington, D.C.'s National Mall (Potomac Park) as the largest of a set of temporary war buildings on the National Mall. Both buildings were constructed by the Navy's Bureau of Yards and Docks, with the United States Department of War occupying the Munitions Building. To make the buildings more resistant to fire, the buildings were constructed using concrete. With solid construction, the temporary buildings remained in use long after the end of World War I. In August 1939, the Secretary of War relocated his offices from the overcrowded State-War-Navy Building (Old Executive Office Building) to the Munitions Building. The Department of War headquarters remained in the Munitions Building, through the early years of World War II, until 1942, when some space became available in the Pentagon, which was under construction. The Munitions Building was turned over to the Navy in 1943, when the Department of War completely vacated the Munitions Building once construction of the Pentagon was completed. Both buildings suffered serious structural problems in the 1960s. In December 1969, President Richard Nixon announced that both buildings would be demolished, a plan which was carried out in 1970. The land was then reclaimed and turned into Constitution Gardens, with the Vietnam Veterans Memorial built near the former Munitions Building site in the early 1980s.

Constitution Gardens is a park area in Washington, D.C., United States, located within the boundaries of the National Mall. The 50-acre (200,000 m2) park is bounded on the west by the Vietnam Veterans Memorial, on the east by 17th St NW, on the north by Constitution Avenue, and on the south by the Reflecting Pool. Constitution Gardens has a small pond, which contains the Memorial to the 56 Signers of the Declaration of Independence on an island open to pedestrians.

The United States Public Health Service Building, also known as the Federal Reserve Board - East Building and formerly the Department of the Interior - South Building, is a historic government office building. It is located at 1951 Constitution Avenue, Northwest, Washington, D.C., adjacent to the Eccles Building. It was the headquarters of the U.S. Public Health Service during 1933–1942 and 1946–1947; at other times it was the headquarters of the Combined Chiefs of Staff, Atomic Energy Commission, and National Science Foundation. From 1965 until 2018, it was used by the Department of the Interior, most prominently as the headquarters of the Bureau of Indian Affairs and Office of Surface Mining. In 2018, it was transferred to the Federal Reserve Board of Governors.

General Jose Gervasio Artigas is a bronze statue, in Washington, DC, capital of the United States, at the intersection of Constitution Avenue and Virginia Avenue, at 18th Street. It is one of a set called the Statues of the Liberators. José Artigas was a 19th-century general, sometimes called "the father of Uruguayan independence", "Protector de los Pueblos Libres" or "Jefe de los Orientales".The Washington, DC, statue was created before 1948 by Juan Manuel Blanes. At its base are engraved the words "Liberty of America is my dream and its attainment my only hope." Although this statue was delivered before the identical one in Montevideo, Minnesota, Montevideo erected theirs in 1949 and the Washington, DC, Parks Department did not erect its until a year later on 19 June 1950. Both statues were gifts from the people of Uruguay and are replicas of an original in San José de Mayo, Uruguay, created by Italian sculptor Dante Costa. The Uruguayan officer Edgardo Ubaldo Genta had conceived the idea in 1940 as a good-will gesture.

The Lincoln Memorial Reflecting Pool is the largest of the many reflecting pools in Washington, D.C., United States. It is a long and large rectangular pool located on the National Mall, directly east of the Lincoln Memorial, with the Washington Monument to the east of the reflecting pool. Part of the iconic image of Washington, the reflecting pool hosts many of the 24 million visitors a year who visit the National Mall. It is lined by walking paths and shade trees on both sides. Depending on the viewer's vantage point, it dramatically reflects the Washington Monument, the Lincoln Memorial, the Mall's trees, and/or the expansive sky.

El Maiz is a modern sculpture, by Édgar Negret.It is located at AMA | Art Museum of the Americas, at the Organization of American States, Constitution Avenue and 18th Street, N.W. Washington, D.C.

An equestrian statue of Venezuelan military and political leader Simón Bolívar by the American artist Felix de Weldon is located in Washington, D.C., at Virginia Avenue NW, 18th Street NW, and C Street NW, near the United States Department of Interior and the Pan American Union Building of the Organization of American States. It was surveyed as part of the Smithsonian Institution's Save Outdoor Sculpture! survey in 1993.

Art Museum of the Americas (AMA), located in Washington, D.C., is the first art museum in the United States primarily devoted to exhibiting works of modern and contemporary art from Latin America and the Caribbean. The museum was formally established in 1976 by the Organization of American States (OAS) as the Museum of Modern Art of Latin America. Artists represented in the AMA's permanent collection include Carlos Cruz-Diez, Candido Portinari, Pedro Figari, Fernando de Szyszlo, Amelia Peláez, and Alejandro Obregón. The art collection of the OAS was initiated under the organization's Visual Arts Unit, beginning with the first donated artwork by the Brazilian neo-realist artist Portinari, in 1949. In the following decade the Permanent Council of the OAS determined to establish an acquisitions fund, in order to build up a permanent collection of artworks by significant contemporary artists from the member states of the OAS. A number of works were also purchased from or donated directly by artists, after the temporary exhibitions periodically held at the OAS gallery. The Art Museum of the Americas itself was established in 1976 by OAS Permanent Council resolution, on the occasion of the United States Bicentennial. The museum opened in what was formerly the official residence of the OAS Secretary General, a Spanish Colonial-style structure designed in 1912 by the architect Paul Cret. Initially the permanent collection held some 250 artworks, expanding over the next quarter-century to over 2000 items of painting, sculpture, installations, photography, and drawing, from the early 20th century and onwards. In addition to its permanent collection of mainly Caribbean and Latin American art, AMA hosts temporary and special exhibitions from across the region, and provides educational seminars and lectures from invited speakers. The Art Museum of the Americas has also expanded its programs to include evening events, such as Art After Dark, with cutting edge music, video, performance, and installation art.

DAR Constitution Hall is a concert hall located at 1776 D Street NW, near the White House in Washington, D.C. It was built in 1929 by the Daughters of the American Revolution to house its annual convention when membership delegations outgrew Memorial Continental Hall. Later, the two buildings were connected by a third structure housing the DAR Museum, administrative offices, and genealogical library. DAR Constitution Hall is still owned and operated by the National Society of Daughters of the American Revolution. It was designated a National Historic Landmark in 1985. It has been a major cultural center of the city since its construction, and houses its largest auditorium.

The United States Department of the Interior (DOI) is one of the executive departments of the U.S. federal government headquartered at the Main Interior Building, located at 1849 C Street NW in Washington, D.C. It is responsible for the management and conservation of most federal lands and natural resources, and the administration of programs relating to Native Americans, Alaska Natives, Native Hawaiians, territorial affairs, and insular areas of the United States, as well as programs related to historic preservation. About 75% of federal public land is managed by the department, with most of the remainder managed by the Department of Agriculture's Forest Service. The department was created on March 3, 1849. The department is headed by the secretary of the interior, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Deb Haaland. As of mid-2004, the department managed 507 million acres (2,050,000 km2) of surface land, or about one-fifth of the land in the United States. It manages 476 dams and 348 reservoirs through the Bureau of Reclamation, 424 national parks, monuments, historical sites, etc. through the National Park Service, and 544 national wildlife refuges through the Fish and Wildlife Service. Despite its name, the Department of the Interior has a different role from that of the interior ministries of other nations, which are usually responsible for police matters and internal security. In the United States, national security and immigration functions are performed by the Department of Homeland Security primarily and the Department of Justice secondarily. The Department of the Interior has often been humorously called "the Department of Everything Else" because of its broad range of responsibilities.

The Interior Museum is a museum operated by the United States Department of the Interior and housed at the Department's headquarters at the Stewart Lee Udall Main Interior Building in Washington, D.C., on the first floor.When the Interior Museum opened in the U.S. Department of the Interior's newly-constructed headquarters in the nation's capital on March 8, 1938, a museum was considered a novel element to include in a federal office building. However, the Secretary of the Interior at that time—Harold Ickes (1874-1952)—was a proponent of the arts and also strongly believed in the importance of having the American people understand the work of the Department. To this day, the Interior Museum's mission remains to actively educate and inspire employees and the public about the ongoing stewardship of the nation's public lands, natural resources, and cultural heritage. The Interior Museum's collection contains more than 8,000 objects of historical, cultural, and scientific importance relating directly to the activities of the Department. In addition to developing exhibitions and public programs, Interior Museum staff also conduct public tours highlighting the elements that made the Stewart Lee Udall Department of the Interior Building a "symbol of a new day" during the Great Depression. The headquarters building contains more New Deal-era murals than any other government building, featuring such artists as John Steuart Curry, Maynard Dixon, William Gropper, Allan Houser, Velino Herrera, and Millard Sheets, plus a series of photomurals by Ansel Adams.

The Main Interior Building, officially known as the Stewart Lee Udall Department of the Interior Building, located in Washington, D.C., is the headquarters of the United States Department of the Interior. Located in the Foggy Bottom neighborhood, it is bounded by 19th Street NW on the west, 18th Street NW on the east, E Street NW on the north, C Street NW on the south, and Virginia Avenue on the southwest. Although the building takes up the entire block, the address is "1849 C Street, NW" to commemorate the founding of the Department of Interior in 1849. To the east is DAR Constitution Hall, the headquarters of the Daughters of the American Revolution, as well as the World Resources Institute and the American Red Cross National Headquarters. To the west is the Office of Personnel Management headquarters. To the north is Rawlins Park, which includes at its eastern end a statue of Major General John A. Rawlins. To the south is Triangle Park. The Building includes offices of the Secretary of the Interior and major bureaus with their employees. It includes the Interior Museum and Interior Library.