Russell Senate Office Building, Beaux-Arts government building in Capitol Hill, United States.

The Russell Senate Office Building is a government structure on Capitol Hill in Washington that houses individual office suites for senators, committee rooms and conference facilities across several floors. Its Constitution Avenue facade displays 34 Doric columns that echo design elements from the Palais du Louvre in Paris.

Congress authorized the structure in 1903 to address overcrowding in the Capitol, and the building opened six years later. It became the first dedicated office space for the Senate, setting a precedent for later congressional expansions on Capitol Hill.

The Caucus Room, renamed the Kennedy Caucus Room in 2009 for Senators John F., Robert F. and Edward M. Kennedy, keeps its original 1910 benches and settles carved with eagles. It hosted the 1912 Titanic hearings, the 1974 Watergate hearings, the Iran-Contra hearings and the 1991 Clarence Thomas nomination hearings. The rotunda holds a statue of Richard Russell by sculptor Frederick Hart.

Visitors should expect security screening at the entrance and can explore public areas during business hours. The wide corridors and high ceilings help with orientation, though the building spans several levels that require walking between different wings.

A central rotunda supports a coffered dome with a glass oculus that brings natural light into the interior, creating a quiet focal point that many visitors walk past. The eighteen Corinthian columns around the space combine classical proportion with a functional design that avoids artificial lighting during the day.