Keeping on with the train station theme: here's Portland's Union Station from three angles. The back, where departures and arrivals take place:
Side view, facing north:
And the front. There are offices upstairs rented out to a variety of businesses, and an upscale restaurant on the south end.
The initial design for the station was created in 1882 by McKim, Mead, and White. Had the original plan been built, the station would have been the largest train station in the world. A smaller plan was introduced and accepted in 1895. Construction of the station began in 1890. It was built by Northern Pacific Terminal Company at a cost of $300,000, and opened on February 14, 1896. The signature piece of the structure is the 50 ft. tall Romanesque clock tower. The "Go By Train" neon sign was added to it after World War II.