Union Station is a former train station in Seattle, Washington, USA, constructed between 1910 and 1911 to serve the Union Pacific Railroad and the Milwaukee Road. It was originally named Oregon and Washington Station, after a subsidiary line of the Union Pacific. Located at the corner of S. Jackson Street and 4th Avenue S. in the Pioneer Square neighborhood, the station opened on May 20, 1911.
The Milwaukee Road discontinued passenger service to Union Station 50 years later, on May 22, 1961, and the Union Pacific followed suit on April 30, 1971. Having sat empty for many years, the station was renovated in the late 1990s by Nitze-Stagen and Paul Allen's Vulcan Inc. It now serves as the headquarters of Sound Transit; its grand hall is rented out to the public for weddings and other events. The Union Station renovation was the winner of the 2000 National Historic Preservation Award.