Chicago Union Station opened in 1925, and is the second building on the site to carry the name. It is the fourth busiest rail terminal in the U.S., serving 140,000 passengers every weekday on average. Union Station has ten tracks coming into it from the north, and 14 from the south.
Union Station’s headhouse covers an entire city block, with the Great Hall at its center. The Great Hall’s atrium stands 110 feet high, and is capped by a vaulted skylight. The entire Union Station takes up close to ten Chicago city blocks, the vast majority of it underground.
For some reason, I’ve been finding myself in New York State recently, and an easy way to travel from New York to the Twin Cities has been to hop aboard Amtrak. Once again I joined the Lake Shore Limited passengers in Syracuse, NY and transferred in Chicago, where I boarded the Empire Builder to Saint Paul, MN. That particular Am-trek takes around 23 hours of total travel time.
Unlike all other stations that serve Amtrak, every train either originates, or terminates at Chicago Union Station. There is no thru traffic on Amtrak in Chicago.