Thurgood Marshall Federal Judiciary Building

Washington Union Station, known locally as Union Station, is a major train station, transportation hub, and leisure destination in Washington, D.C. Designed by Daniel Burnham and opened in 1907, it is Amtrak's headquarters, the railroad's second-busiest station, and North America's 10th-busiest railroad station. The station is the southern terminus of the Northeast Corridor, an electrified rail line extending north through major cities including Baltimore, Philadelphia, New York City, and Boston, and the busiest passenger rail line in the nation. In 2015, it served just under five million passengers.An intermodal facility, Union Station also serves MARC and VRE commuter rail services, the Washington Metro, the DC Streetcar, intercity bus lines, and local Metrobus buses. It carries the IATA airport code of ZWU.At the height of its traffic, during World War II, as many as 200,000 passengers passed through the station in a single day. In 1988, a headhouse wing was added and the original station renovated for use as a shopping mall. As of 2014, Union Station was one of the busiest rail facilities and shopping destinations in the United States, visited by over 40 million people a year. However, the COVID-19 pandemic and other factors caused a sharp decline in retail and dining; by late 2022, more than half its commercial space was vacant, but Amtrak is attempting to regain control of the station and plans a major renovation and expansion.

The National Visitor Center was an ill-fated attempt to repurpose Washington, D.C.'s Union Station as an information center for tourists visiting the United States Capitol and other Washington attractions. It opened for the Bicentennial celebrations in 1976, but it never was able to attract enough crowds to sustain its operating costs, and it closed in 1978.

The Monocle is a restaurant in the Capitol Hill neighborhood of Washington, D.C.

Columbus Circle, also known as Union Station Plaza or Columbus Plaza, is a traffic circle at the intersection of Delaware, Louisiana and Massachusetts Avenues and E and First Streets, Northeast in Washington, D.C. It is located in front of Union Station right next to the grounds of the United States Capitol. Union Station and its access roads interrupt this circle on one side, forming an arc. The Thurgood Marshall Federal Judiciary Building is located on the eastern side and the National Postal Museum is on the western side of the plaza next to Union Station. Both buildings are on the northern side of Massachusetts Avenue NE.

Columbus Fountain also known as the Columbus Memorial is a public artwork by American sculptor Lorado Taft, located at Union Station in Washington, D.C., United States. A centerpiece of Columbus Circle, Columbus Fountain serves as a tribute to the explorer Christopher Columbus. The unveiling in 1912 was celebrated all over Washington, DC over the course of three days with parades, concerts and fireworks gathering tens of thousands of people from all over the world.

Union Station is a Washington Metro station in Washington, D.C., on the Red Line. It has a single underground island platform. The station is located in the Northeast quadrant of the city under the western end of Union Station, the main train station for Washington, where connections can be made to Amtrak intercity trains, as well as Virginia Railway Express and MARC commuter rail trains to suburbs in Virginia, Maryland, and West Virginia. The station was originally named "Union Station–Visitor Center" but when the National Visitor Center there failed, it was renamed Union Station. One or two pylons still read "Union Station-Visitor Center", and a number of older stations still display this name on signage. Service began on March 27, 1976, with the opening of the Red Line. It is the busiest station in the Metrorail system, averaging 29,197 passengers per weekday as of May 2017.

The 1953 Pennsylvania Railroad train wreck occurred on January 15, 1953, when a passenger and mail train from Boston to Washington DC (the Federal) failed to brake sufficiently on its approach to Union Station, Washington, jumping the platform and plunging through the floor of the concourse. There were no deaths, but 43 people were injured. The cause of the accident was a design flaw that allowed a brake-valve to close without human intervention.

St. Joseph's Catholic Church, also commonly known as St. Joseph's on Capitol Hill, is a parish of the Roman Catholic Church in the Capitol Hill neighborhood of Washington, D.C., in the Archdiocese of Washington. The church is located less than half a mile from the United States Capitol Building and United States Supreme Court Building. The church was founded by German immigrants. On October 25, 1868 when a reported crowd of 20,000 people, including President Andrew Johnson, came to lay the cornerstone. The architect was from Cologne, Germany and modeled St. Joseph's design after the Cologne Cathedral. The church was constructed of brown stone from Hershey, Pennsylvania and cost $75,000 to build. It was dedicated on January 18, 1891. Masses were originally said in Latin (as it was everywhere before 1964) with homilies in German until Italian immigrant stonemasons working on expansion of the Capitol began joining the congregation. The church underwent an extensive renovation and restoration beginning in 2002.The church's proximity to the Supreme Court, Capitol, and congressional office buildings have attracted many members of Congress, congressional staffers, and Supreme Court justices to daily Mass. St. Joseph is located on the Senate side of the Capitol, and is commonly known as the Senate church, while its counterpart on the House side of the Capitol, St. Peter's, is commonly known as the House church. Those known to attend daily Mass at St. Joseph's include Senator John E. Kenna, Senator Robert F. Kennedy, Senator Ted Kennedy, and Antonin Scalia. In 2017, the church began holding an annual "Gold Mass" for congressional staffers.

Swampoodle Grounds aka Capitol Park (II) was the home of the Washington Nationals baseball team of the National League from 1886 to 1889. The name refers to the one-time Swampoodle neighborhood of Washington. The ballfield was located on a block bounded by North Capitol Street NE and tracks (west); F Street NE (south); Delaware Avenue NE (east); and G Street NE (north); a few blocks north of the Capitol building. Spectators faced toward the south and could see the Capitol dome. They could also see the McDowell and Sons Feed Mill, visible behind right field in the picture, and which was across F Street to the south. The club moved a few blocks north, from Capitol Park (I) to the Swampoodle location, upon joining the National League. Local papers reported that the new grounds had more space and a more favorable lease. The papers often referred to the new grounds as Capitol Park, even as the previous Capitol Park was still in use, under the same name, for various types of entertainment. When referencing the previous park, the reports would general specify its location, to minimize possible confusion. Portions of the site were eventually annexed as the site of the Union Station and of the Main Post Office, which is now the National Postal Museum. Swampoodle Grounds held 6,000. The Washington Statesmen folded after the end of the 1889 season.

Mountains and Clouds is a sculpture by Alexander Calder located in the Hart Senate Office Building.

The Philip A. Hart Senate Office Building is the third U.S. Senate office building, and is located on 2nd Street NE between Constitution Avenue NE and C Street NE in Washington, D.C., in the United States. Construction began in January 1975, and it was first occupied in November 1982. Rapidly rising construction costs plagued the building, creating several scandals. The structure is named for Philip Hart, who served 18 years as a senator from Michigan. Accessed via a spur of the United States Capitol Subway System, the building features a nine-story atrium dominated by massive artwork, and a large Central Hearing Facility which provides television facilities as well as extensive seating.

The Dirksen Senate Office Building is the second office building constructed for members of the United States Senate in Washington, D.C., and was named for the late Minority Leader Everett Dirksen from Illinois in 1972.