Described as "one of the great pieces of Beaux-Arts architecture in America" by The New Yorker art critic Brendan Gill, this is Pittsburgh's only 20th-century station still in use. Officially called Union Station but referred to as Penn Station by locals, its most stunning feature is the street-level rotunda made from brown terracotta that resembles brownstone. The station's grand appearance is a monument to the glamorous days of rail travel in America.

The most scenic rail journey in every US state

Beautiful images of the world's train stations