St. Patrick's Day weekend has officially arrived, and residents outdoors for events like the Chicago River dyeing maybe noticed some hazy skies surrounding the Chicago skyline.

360 Chicago, the observation deck high above Michigan Avenue, is offering free admission to Chicago ... building became part of the iconic Chicago skyline in 1973. The broadcast antennas were ...

If you're hoping to see as much of Chicago as you can in a short amount of time, you may want to sign up for a boat tour. During each tour, you'll learn the historical significance of the skyline ...