File:Rotunda, Pittsburgh Union Station, Liberty Avenue, Pittsburgh, PA - 53613263180.jpg

English: Built in 1898-1904, this Beaux Arts-style building was designed by Daniel H. Burnham for the Pennsylvania Railroad to serve as a passenger station and office building. The building replaced a previous Union Station, built in the mid-19th Century, which had been heavily damaged during the Pittsburgh Railroad Strike of 1877. The building housed the offices of the Pennsylvania Railroad in the tower, with a waiting room and passenger concourse at the base, and once featured a barrel vaulted glass-enclosed train shed to the rear, which was removed in the mid-20th Century to allow for the construction of Interstate 579. The building features a buff brick exterior with terra cotta trim, arched windows on the tenth floor, corbels and cartouches, one-over-one double-hung windows, a large front rotunda with a domed ceiling and roof, decorative clock faces, and corner pavilions with arched openings, and arched transoms at the first floor. The building’s rotunda was listed on the National Register of Historic Places in 1973, and the entire building was listed on the National Register of Historic Places in 1976. Between 1986 and 1988, the building was rehabilitated for adaptive reuse as an apartment complex, with a more modern annex being constructed for Amtrak at the base of the structure.