Dearborn Station was the oldest of the six intercity

Inter-city rail

Inter-city rail services are express passenger train services that cover longer distances than commuter or regional trains.There is no precise definition of inter-city rail. Its meaning may vary from country to country...

 train station

Train station

A train station, also called a railroad station or railway station and often shortened to just station,"Station" is commonly understood to mean "train station" unless otherwise qualified. This is evident from dictionary entries e.g...

s serving downtown Chicago

Chicago

Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 during the heyday of rail in the twentieth century. Additionally, the station was used as a terminal for commuter traffic. Located at Dearborn and Polk Streets, it was also referred to as Polk Street Station. The station was owned by the Chicago and Western Indiana Railroad

Chicago and Western Indiana Railroad

The Chicago and Western Indiana Railroad was the owner of Dearborn Station in Chicago and the trackage leading to it. It was owned equally by five of the railroads using it to reach the terminal, and kept those companies from needing their own lines into the city...

, which itself was owned by the companies operating over its line.

The Romanesque Revival

Romanesque Revival architecture

Romanesque Revival is a style of building employed beginning in the mid 19th century inspired by the 11th and 12th century Romanesque architecture...

 structure, designed by Cyrus L. W. Eidlitz

Cyrus L. W. Eidlitz

Cyrus Lazelle Warner Eidlitz was a New York architect best known for designing One Times Square, the former New York Times Building on Times Square.-Early life and education:Cyrus Lazelle Warner Eidlitz was born in New York...

, opened on May 8, 1885.