The Board of Trade is a 1930 art-deco gem. Inside, manic traders swap futures and options – or they used to. There aren't many left these days, as most trading is now done by computer versus guys yelling on the trading-pit floor. Outside, check out the giant statue of Ceres, the goddess of agriculture, that tops the building.

Cruises, Sailing & Water Tours activity

Chicago Architecture River Cruise

$34

The Chicago Architecture Foundation offers tours ($15) of the building's interior three times per month.