First Air Mail Marker

The Franklin Delano Roosevelt Memorial is a presidential memorial in Washington D.C., dedicated to the memory of Franklin Delano Roosevelt, the 32nd President of the United States, and to the era he represents. The memorial is the second of two that have been constructed in Washington to commemorate that president. Dedicated on May 2, 1997 by President Bill Clinton, the national memorial, spread over 7.5 acres (3.0 ha) adjacent to the southwest side of the Tidal Basin along the Cherry Tree Walk in West Potomac Park, traces 12 years of the history of the United States through a sequence of four outdoor rooms, one for each of FDR's terms of office. Sculptures inspired by photographs depict the 32nd president alongside his dog Fala. Other sculptures depict scenes from the Great Depression, such as listening to a fireside chat on the radio and waiting in a bread line, a bronze sculpture by George Segal. A bronze statue of First Lady Eleanor Roosevelt standing before the United Nations emblem honors her dedication to the UN. It is the only presidential memorial to depict a First Lady.Considering Roosevelt's disability, the memorial's designers intended to create a memorial that would be accessible to those with various physical impairments. Among other features, the memorial includes an area with tactile reliefs with braille writing for people who are blind. However, the memorial faced serious criticism from disabled activists. Vision-impaired visitors complained that the braille dots were improperly spaced and that some of the braille and reliefs were mounted eight feet off of the ground, placing it above the reach of most people.

The George Mason Memorial is a memorial to Founding Father George Mason, the author of the Virginia Declaration of Rights that inspired the United States Bill of Rights. The Memorial is located in West Potomac Park within Washington, D.C. at 24 E Basin Drive SW, which is a part of the Tidal Basin. Authorized in 1990, with a groundbreaking in 2000 and dedication in 2002, the memorial includes a sculpture of Mason, a pool, trellis, circular hedges, and numerous inscriptions. It was the first memorial in the Tidal Basin area to be dedicated to someone who was not a former President of the United States.

The Martin Luther King, Jr. Memorial is a national memorial located in West Potomac Park next to the National Mall in Washington, D.C., United States. It covers four acres (1.6 ha) and includes the Stone of Hope, a granite statue of Civil Rights Movement leader Martin Luther King Jr. carved by sculptor Lei Yixin. The inspiration for the memorial design is a line from King's "I Have a Dream" speech: "Out of the mountain of despair, a stone of hope." The memorial opened to the public on August 22, 2011, after more than two decades of planning, fund-raising, and construction.This national memorial is the 395th unit in the United States National Park Service. The monumental memorial is located at the northwest corner of the Tidal Basin near the Franklin Delano Roosevelt Memorial, on a sightline linking the Lincoln Memorial to the northwest and the Jefferson Memorial to the southeast. The official address of the monument, 1964 Independence Avenue, S.W., commemorates the Civil Rights Act of 1964.A ceremony dedicating the memorial was scheduled for Sunday, August 28, 2011, the 48th anniversary of the "I Have a Dream" speech that Martin Luther King Jr. delivered from the steps of the Lincoln Memorial in 1963 but was postponed until October 16 (the 16th anniversary of the 1995 Million Man March on the National Mall) due to Hurricane Irene.Although this is not the first memorial to an African American in Washington, D.C., King is the first African American honored with a memorial on or near the National Mall and only the fourth non-President to be memorialized in such a way. The King Memorial is administered by the National Park Service (NPS).

The Tidal Basin is a man-made reservoir located between the Potomac River and the Washington Channel in Washington, D.C. It is part of West Potomac Park, is near the National Mall and is a focal point of the National Cherry Blossom Festival held each spring. The Jefferson Memorial, the Martin Luther King Jr. Memorial, the Franklin Delano Roosevelt Memorial, and the George Mason Memorial are situated adjacent to the Tidal Basin. The basin covers an area of about 107 acres (43 ha) and is 10 feet (3.0 m) deep.

Air Florida Flight 90 was a scheduled U.S. domestic passenger flight operated by Air Florida from Washington National Airport (now Ronald Reagan Washington National Airport) to Fort Lauderdale–Hollywood International Airport, with an intermediate stopover at Tampa International Airport. On January 13, 1982, the Boeing 737-222 registered as N62AF crashed into the 14th Street Bridge over the Potomac River.Striking the bridge, which carries Interstate 395 between Washington, DC, and Arlington County, Virginia, it hit seven occupied vehicles and destroyed 97 feet (30 m) of guard rail: 5  before plunging through the ice into the Potomac River. The aircraft was carrying 74 passengers and five crew members. Only four passengers and one crew member (a flight attendant) were rescued from the crash and survived. Another passenger, Arland D. Williams, Jr., assisted in the rescue of the survivors, but drowned before he could be rescued. Four motorists on the bridge were killed. The survivors were rescued from the icy river by civilians and professionals. President Ronald Reagan commended these acts during his State of the Union speech a few days later. The National Transportation Safety Board (NTSB) determined that the cause of the accident was pilot error. The pilots failed to switch on the engines' internal ice protection systems, used reverse thrust in a snowstorm prior to takeoff, tried to use the jet exhaust of a plane in front of them to melt their ice, and failed to abandon the takeoff even after detecting a power problem while taxiing and having ice and snow build up on the wings.

West Potomac Park is a U.S. national park in Washington, D.C., adjacent to the National Mall. It includes the parkland that extends south of the Lincoln Memorial Reflecting Pool, from the Lincoln Memorial to the grounds of the Washington Monument. The park is the site of many national landmarks, including the Korean War Veterans Memorial, Jefferson Memorial, Franklin Delano Roosevelt Memorial, George Mason Memorial, and the Martin Luther King Jr. Memorial. The park includes the surrounding land on the shore of the Tidal Basin, an artificial inlet of the Potomac River which was created in the 19th century, an inlet that links the Potomac with the northern end of the Washington Channel. West Potomac Park is administered by National Mall and Memorial Parks, an administrative unit of the National Park Service's National Capital Parks.

The Cuban Friendship Urn, also known as the Cuban–American Friendship Urn or USS Maine Memorial, is a marble statue in Washington, D.C., listed on the National Register of Historic Places. The monument originally stood in Cuba to honor the American deaths aboard the USS Maine preceding the Spanish–American War in 1898.

The 14th Street bridges refers to the three bridges near each other that cross the Potomac River, connecting Arlington, Virginia and Washington, D.C. Sometimes the two nearby rail bridges are included as part of the 14th Street bridge complex. A major gateway for automotive, bicycle and rail traffic, the bridge complex is named for 14th Street (U.S. Route 1), which feeds automotive traffic into it on the D.C. end. The complex contains three four-lane automobile bridges — including, from west to east, one southbound, one bi-directional, and one northbound — that carry Interstate 395 (I-395) and U.S. Route 1 (US 1) traffic, as well as a bicycle and pedestrian lane on the southbound bridge. In addition, the complex contains two rail bridges, one of which carries the Yellow Line of the Washington Metro; the other of which, the only mainline rail crossing of the Potomac River to Virginia, carries a CSX Transportation rail line. The five bridges, from west to east are the George Mason Memorial Bridge, the Rochambeau Bridge, the Arland D. Williams, Jr. Memorial Bridge, the Charles R. Fenwick Bridge and the Long Bridge. At the north end of the bridges, in East Potomac Park, the three roadways connect to a pair of two-way bridges over the Washington Channel into downtown Washington, one connecting to traffic (including northbound US 1) north onto 14th Street, and the other connecting to I-395 traffic on the Southwest Freeway. The Metro line connects to a tunnel in the East Potomac Park, and the main line railroad from the Long Bridge passes over I-395 and runs over the Washington Channel just downstream of the 14th Street approach before turning northeast along the line of Maryland Avenue. On January 13, 1982, 78 people were killed when Air Florida Flight 90 clipped the northbound I-395 span of the 14th Street bridge during rush hour and crashed into the Potomac river. The repaired span was renamed in honor of Arland D. Williams Jr., a passenger on the plane who survived the initial crash, but drowned after repeatedly passing a helicopter rescue line to other survivors.

The District of Columbia War Memorial commemorates the citizens of the District of Columbia who served in World War I. Located on the National Mall, it was constructed in 1931 as a domed, peristyle Doric temple.

The Navy – Merchant Marine Memorial, located in Lady Bird Johnson Park on Columbia Island in Washington, D.C., is a monument honoring sailors of the United States Navy, Coast Guard, the United States Merchant Marine, the NOAA Commissioned Officer Corps and others who died at sea during World War I and other times. It was designed in 1922 by Harvey Wiley Corbett and sculpted by Ernesto Begni del Piatta, who died before it could be completed. It was cast in a foundry in Cleveland. Ground was broken on the memorial in 1930, with the foundation completed the following year and it was installed on October 18, 1934, but work on the base and landscaping was postponed due to lack of funding. A dedication ceremony was held on May 30, 1935. Funding was finally approved by Congress to finish the memorial in 1939 and work began anew the following September, to be completed by the end of the year.Nicknamed "Waves and Gulls," the memorial depicts seven seagulls above the crest of a wave. It is cast from aluminum and the base is made of green granite from New Hampshire (the base was originally concrete but replaced by the Works Progress Administration). It stands 35 feet (10.6 m) tall and 30 feet (9.1 m) wide. It is the first aluminum memorial in Washington, DC. The memorial reads: To the strong souls and ready valor of those men of the United States who in the Navy, the Merchant Marine and other paths of Activity upon the waters of the world have given life or still offer it in the performance of heroic deeds this monument is dedicated by a grateful people.

The Jefferson Memorial is a presidential memorial built in Washington, D.C. between 1939 and 1943 under the sponsorship of President Franklin D. Roosevelt. Roosevelt thought that it was a suitable memorial to the Founding Fathers of the United States and to Thomas Jefferson, the principal author of the United States Declaration of Independence and the founder of the Democratic-Republican Party. The neoclassical building is situated in West Potomac Park on the shore of the Potomac River. It was designed by John Russell Pope and built by Philadelphia contractor John McShain. Construction began in 1939 and was completed in 1943. The bronze statue of Jefferson was added in 1947. Pope made references to the Roman Pantheon whose designer was Apollodorus of Damascus, and to Jefferson's own design for the rotunda at the University of Virginia. The Jefferson Memorial and the White House form one of the main anchor points in the area of the National Mall in D.C. The Washington Monument was intended to be located at the intersection of the White House and the site for the Jefferson Memorial, but soft swampy ground required that it be situated to the east.The national memorial is managed by the National Park Service of the Department of the Interior under its National Mall and Memorial Parks division. In 2007, it was ranked fourth on the "List of America's Favorite Architecture" by the American Institute of Architects.

The Kutz Memorial Bridge is a bridge that carries Independence Avenue across the Tidal Basin in Washington, D.C., in the United States. Architect Paul Philippe Cret designed the multi-span plate girder bridge in 1941. The Alexander & Repass Company constructed the bridge, which the company completed in 1943.The bridge's name commemorates Brigadier General Charles Willauer Kutz, who served as Commissioner of Engineering for the District of Columbia during the first half of the 20th century. Following alterations, the bridge was dedicated in 1954.