Main Concourse at Los Angeles Union Station - LAUS, principal railway station owned by LAMTA - Los Angeles Metropolitan Transportation Authority and operated by Amtrak and Metrolink. Built in 1939, Los Angeles Union Station is the largest railroad passenger terminal in the Western United States and is widely regarded as “the last of the great train stations.” The station’s signature Mission Moderne style makes it one of L.A.’s architectural gems. The station was commissioned in 1933 as a joint venture between the Southern Pacific, Union Pacific and Atchison, Topeka, and Santa Fe railroads and was intended to consolidate the three local railroad terminals (Source www.unionstationla.com).