Los Angeles Union Station is the main railway station in Los Angeles, California, and the largest railroad passenger terminal in the Western United States. It opened in May 1939 as the Los Angeles Union Passenger Terminal, replacing La Grande Station and Central Station. Today, the station is a major transportation hub for Southern California, serving almost 110,000 passengers a day. It is by far the busiest train station in the Western United States; it is Amtrak's fifth-busiest station, and is the twelfth-busiest train station in North America.