+29 Cannon House Office Building Washington Dc 20515 2025. The cannon house office building (constructed beginning in 1905 and completed in 1908) is the oldest congressional office building and a significant example of the beaux arts style of. 126 cannon house office building.
126 cannon house office building. The cannon house office building (constructed beginning in 1905 and completed in 1908) is the oldest congressional office building and a significant example of the beaux arts style of. It occupies a site south.
