Washington Monument

Jefferson Pier, Jefferson Stone, or the Jefferson Pier Stone, (pronounced pie-er, like radials of a pie) in Washington, D.C., marks the second prime meridian of the United States even though it was never officially recognized, either by presidential proclamation or by a resolution or act of Congress.

In America: Remember was a public art installation by American artist Suzanne Brennan Firstenberg. The exhibition, on display from September 17 to October 3, 2021, in Washington, D.C., honored Americans who died in the COVID-19 pandemic by blanketing a portion of the National Mall near the Washington Monument with over 600,000 small white flags, one for each life lost. The number of flags rose to 701,133 by the end of the exhibition, reflecting the updated death toll.

The German-American Friendship Garden on the National Mall in Washington, D.C. stands as a symbol of the positive and cooperative relations between the United States of America and the Federal Republic of Germany. Situated within the Washington Monument grounds on the historic axis between the Jefferson Pier and the White House (see White House meridian), the garden borders Constitution Avenue Northwest between 15th and 17th Streets Northwest, where an estimated seven million visitors pass each year. The garden features plants native to both Germany and the United States and provides seating and cooling fountains.

On November 11, 2011, Oscar Ramiro Ortega-Hernandez, an unemployed 21-year-old man, fired multiple shots at the White House using a semi-automatic rifle. At least seven bullets hit the second floor. Neither the President Barack Obama nor First Lady Michelle Obama were home at the time; the president was not in Washington, D.C., having been on a trip abroad. However, the couple's youngest daughter, Sasha, and the first lady's mother, Marian Shields Robinson, were in the White House. No one was injured. It took four days for the Secret Service to realize that bullets had struck the White House. Michelle Obama learned of the shooting from an usher, then summoned Mark J. Sullivan, director of the Secret Service, to find out why the first family had not been informed. In September 2013, Ortega-Hernandez pleaded guilty to one count of property destruction and one count of discharging a firearm during a crime of violence, thereby avoiding being charged with an attempt to assassinate the President. In March 2014, he was sentenced to 25 years' imprisonment. In September 2014, The Washington Post published an investigative report detailing errors that the Secret Service made on the night of the shooting that led to the crime going undiscovered. A House of Representatives hearing followed and Julia Pierson, director of the Secret Service, resigned the following week. It was the first shooting at the White House since Francisco Martin Duran's attempted assassination of President Bill Clinton in 1994.

Ripps Island was an island located in the Potomac River in the northwest quadrant of Washington, D.C., in the United States. It was located at the mouth of Tiber Creek, in the vicinity of today's Constitution Gardens.

The National Museum of African American History and Culture (NMAAHC) is a Smithsonian Institution museum located on the National Mall in Washington, D.C., in the United States. It was established in December 2003 and opened its permanent home in September 2016 with a ceremony led by President Barack Obama. Early efforts to establish a federally owned museum featuring African-American history and culture can be traced to 1915, although the modern push for such an organization did not begin until the 1970s. After years of little success, a much more serious legislative push began in 1988 that led to authorization of the museum in 2003. A site was selected in 2006, and a design submitted by Freelon Group/Adjaye Associates/Davis Brody Bond was chosen in 2009. Construction began in 2012 and the museum completed in 2016. The NMAAHC is the world's largest museum dedicated to African-American history and culture. It ranked as the fourth most-visited Smithsonian museum in its first full year of operation. The museum has more than 40,000 objects in its collection, although only about 3,500 items are on display. The 350,000-square-foot (33,000 m2), 10 story building (five above and five below ground) and its exhibits have won critical praise.

The U.S. Capitol Gatehouses and Gateposts — designed circa 1827 by celebrated architect Charles Bulfinch — originally stood on the grounds of the United States Capitol in Washington, D.C. Two of the gatehouses are listed on the National Register of Historic Places in their new locations. One gatehouse and three of the gateposts now stand at 15th Street and Constitution Avenue within the President's Park South (PPS) historic district north of the National Mall. The other gatehouse is at 17th and Constitution, also within the PPS. Four other gateposts have been relocated to the main entrance of the National Arboretum at New York Avenue NE and Springhouse Road NE.

14th Street NW/SW is a street in Northwest and Southwest quadrants of Washington, D.C., located 1.25 miles (2.01 km) west of the U.S. Capitol. It runs from the 14th Street Bridge north to Eastern Avenue. Northbound U.S. Route 1 runs along 14th Street from the bridge to Constitution Avenue, where it turns east with US 50. US 1 southbound previously used 15th Street NW due to the ban on left turns from westbound Constitution Avenue to 14th Street, but it now uses the Ninth Street Tunnel, five blocks to the east. 14th Street crosses the National Mall and runs near the White House and through the western side of Washington's Logan Circle neighborhood. Because it connects to one of the main bridges crossing the Potomac River into Virginia, 14th Street has always been a major transportation corridor. It was the location of one of the first streetcar lines, and today it is the location of several afternoon carpooling "slug lines", which allow commuters to meet the high-occupancy vehicle requirements of I-395, the Henry G. Shirley Memorial Highway.

Loss and Regeneration is a 1993 bronze sculpture by Joel Shapiro, installed at the United States Holocaust Memorial Museum in Washington, D.C.

The Babcock Lakes (38.8901119°N 77.0385880°W / 38.8901119; -77.0385880) were a series of water ponds formerly located near the Washington Monument in Washington, D.C., before the area became the National Mall. In 1878, they were designated as fisheries by the United States Fish Commission, in an effort to increase availability of commercial fish in America. While extant, the lakes played a key role in introducing carp into the United States. By 1896, some 2.4 million carp had been distributed from the lakes to restock fish supplies in both North and South America.By 1911, the lakes had been covered by land dredged from the Potomac River in the expansion of West Potomac Park.

The First National Jamboree was scheduled to take place from August 21 to August 30, 1935, to celebrate the Silver jubilee of the Boys Scouts of America who were founded on February 8, 1910. However, due to an outbreak of polio at the time in Washington, D.C. and the neighboring states, it was canceled and pushed back to 1936. Due to various factors, it was pushed one more year and finally took place from June 30 to July 9, 1937. 25,000 Scouts attended the event taking place on the National Mall at the foot of the Washington Monument using equipment loaned by the United States Army. It saw Scouts from all around the United States arriving by train as well as representatives of several foreign countries' scouting groups who traveled by boat and sometimes by foot. The event was celebrated by the entire city with Federal buildings being opened for visits, Mount Vernon offering daily visits, and many local residents volunteering their time. U.S. President Roosevelt took part in the celebration and a special message from Lord Baden-Powell was broadcast from London to the Scouts during the Jamboree calling for International Friendship. It was a display of American patriotism with American flags on display, the event taking place in the American capital in front of the White House and taking place the week of the 4th of July.

The Sidney R. Yates Federal Building, historically known as the Bureau of Engraving and Printing and later the Auditor's Building Complex, is a large historic federal building located on the National Mall and built between 1878–1880 that has housed multiple federal government offices. It is an L-shaped building of red and black brick construction in the Romanesque style and was designed by the office of James G. Hill, the Supervising Architect of the Treasury. The brick was provided by the Peerless Brick Company of Philadelphia. The builder was John Fraser, Superintendent of Construction for the Treasury, and the bricklayers were Bitting & Davidson.The building was originally designed and constructed for the United States Department of the Treasury Bureau of Engraving and Printing (BEP). The Bureau was founded in 1862 to allow the federal government to produce its own official documents; private companies having done so prior to this. The Bureau's machinery and offices were originally located in the Treasury Building, but eventually more space was required. In 1878, land was purchased from philanthropist William Wilson Corcoran and an Act of Congress on June 28 of that year authorized commencement of construction. The building was completed in 1880. Three additions were later constructed in 1891, 1895 and 1900. The Bureau moved to a larger building at 14th & C Streets in 1914.Following the Bureau's move, the building was used by a number of government agencies, but primarily housed auditors from the Departments of Navy, Treasury, and State, and became known as the "Auditors' Complex". Engravers from the BEP also later used space on the west of the building as it provided excellent natural light for their work. By the 1960s, the building had become underutilized and in need of major renovation. It was slated for demolition in 1966, but was postponed due to lack of funding.The building was listed on the National Register of Historic Places in April 1978 for its architectural and historical significance. The listing included three contributing buildings, named Annex #1-3, on 2 acres (0.81 ha).Following a repair and modernization campaign in 1985–1987, the USDA Forest Service moved into the building in 1990 and continues to occupy the building. In 1988, the 1891 addition known as the South Annex was demolished so that the adjacent United States Holocaust Memorial Museum could expand into the space. In 1999, it was redesignated the Sidney R. Yates Federal Building, honoring Illinois Congressman Sidney Richard Yates who helped establish the Holocaust Memorial Museum and served on its council.In 2017, a working clock was added to the tower. It had been a part of the original design, but was not installed due to excessive costs.