Chicago is home to many of the country's most notable travel companies from airlines and hotel chains to online travel agents and tour operators. It is the most populous city in the U.S. state of Illinois, and the third most populous city in the United States.
Famed for its bold architecture, it has a skyline punctuated by skyscrapers such as the iconic John Hancock Center, 1,451-ft. Willis Tower (formerly the Sears Tower) and the neo-Gothic Tribune Tower. The city is also renowned for its museums, including the Art Institute of Chicago with its noted Impressionist and Post-Impressionist works.
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