High Quality Content by WIKIPEDIA articles! Washington Union Station is a train station and leisure destination visited by 32 million people each year in the center of Washington, D.C. The train station is served by Amtrak, MARC and Virginia Railway Express commuter rail services as well as by Washington Metro subway trains and local buses. It opened in 1907 and at its height during World War II some 200,000 people passed through it every day. It is also the headquarters for Amtrak.