Union Station is a major railway station and intermodal transportation hub in Toronto, Ontario, Canada. The station is located in downtown Toronto, on Front Street West, on the south side of the block bounded by Bay Street and York Street. The municipal government of Toronto owns the station building while the provincial transit agency Metrolinx owns the train shed and trackage. It is operated by the Toronto Terminals Railway, a joint venture of the Canadian National Railway and Canadian Pacific Railway, which directs and controls train movement along the Union Station Rail Corridor, the largest and busiest rail corridor in Canada. Constructed in 1927, Union Station has been a National Historic Site of Canada since 1975, and a Heritage Railway Station since 1989.