Come out and be a part of one of the biggest and most unique St. Patrick’s Day celebration around. The City of Chicago leads a proud and beloved tradition that dates back over 50 years by dyeing the river green in honor of St. Patrick’s Day. It may not seem like much when you first hear about it…but it’s actually really cool! Thousands of people gather near Columbus Dr. and Wacker Dr. to watch the event. It starts around 9am and lasts for approximately 5 hours! Show up early to get a spot, they fill up quick.