The busiest airfield in the world, the third-busiest rail terminal in the country, the largest convention center in the hemisphere and a cruise pier in the middle of the skyline — Chicago's hubs all broke records at once, and all of them are being rebuilt bigger.
Chicago has been the continent's transfer point since the railroads, and 2025 proved the title still holds: O'Hare carried a record 84.86 million passengers and more flights than any airport on earth, Union Station turned 100 with a billion-dollar improvement program underway, and 56.8 million visitors spent a record $21.5 billion.
The eight studies in this hub walk the whole machine: the hotel reflags and the Fulton Market gap, the ORDNext rebuild toward the Global Terminal, Union Station's centennial and the CHIP program, Great Lakes cruising from Navy Pier, the CTA's unbeatable visitor arithmetic, the drive-market arrivals story, and where the record spending actually concentrates.
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