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House History

Cannon House Office Building: A Congressional First

Cannon Caucus Room

The Cannon Caucus Room is the grandest room built for the House of Representatives outside of the Capitol. Measuring 74 feet long by 54 feet wide, the room is embellished with paired Corinthian pilasters standing on a continuous pedestal and supporting a richly detailed entablature, with decorative moldings, color, and gilding. The ceiling is decorated with a variety of classical motifs, including rosettes and a Greek key border. Six windows facing the courtyard and four crystal chandeliers light the room. The three-tiered chandeliers, which are original to the room, feature etched globes. This room is perhaps most famous as the site of some of the House Un-American Activities Committee’s most widely publicized hearings. Today it is used for numerous events throughout the year.

Caucus Room, Cannon House Office Building

Caucus Room, Cannon House Office Building Image courtesy of the Architect of the Capitol


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