- This event has passed.
Watch the Chicago River turn GREEN?!
March 16 @ 9:00 am - 11:00 pmFree
Once a year, the unthinkable happens. The Chicago River somehow, some way, turns green. Scientists are working around the clock to figure out why, but for now, we may as well enjoy it. The best places for you and your dog to watch this phenomenon are on the east side of Michigan Avenue, the west side of Columbus Drive and the surrounding riverwalk and bridges!