The Senate of Canada Building (French: édifice du Sénat du Canada) is located at 2 Rideau Street in downtown Ottawa, Ontario, Canada and serves as the temporary seat of the Senate of Canada. The building served as Ottawa's central railway station (Ottawa Union Station) from 1912 until 1966, and from 1966 to 2018 it was operated by the Government of Canada as the Government Conference Centre. The building currently includes a temporary Senate chamber, as well as some Senate offices and committee rooms.