Because before there was Dubai, there was Chicago. Some of the greatest architects, from Louis Sullivan to Frank Gehry, have left their imprint on Chicago. And the skyline continues to evolve. The best way to keep up with the changes: a riverboat tour with the Chicago Architecture Foundation, which takes you through the city’s past and into the future. Plans are also under way for Santiago Calatrava’s twisting, 2,000-foot Chicago Spire, set for completion in 2011.
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