On Chicago's actual birthday - March 4 - guests can attend the city's birthday party at 360 CHICAGO from 3-7 p.m., with complimentary offerings of Garett Popcorn, a slice of birthday cake and ...

In honor of Chicago’s birthday Tuesday, one of the city’s iconic downtown landmarks is offering free admission. From March 1-7, Chicago residents can visit 360 CHICAGO observation deck for free.