Union Station, also known as Pennsylvania Station and commonly called Penn Station, is a historic train station in Downtown Pittsburgh, Pennsylvania. It was one of several passenger rail stations that served Pittsburgh during the 20th century; others included the Pittsburgh & Lake Erie Railroad Station, the Baltimore and Ohio Station, and Wabash Pittsburgh Terminal, and it is the only surviving station in active use.

Downtown Pittsburgh, colloquially referred to as the Golden Triangle, and officially the Central Business District, is the urban downtown center of Pittsburgh, Pennsylvania, United States. It is located at the confluence of the Allegheny River and the Monongahela River whose joining forms the Ohio River. The triangle is bounded by the two rivers.