Do not fail to witness the modern day miracle that happens during the St. Patrick's Day when the Chicago River turns into incredible Irish green shade. Witnessing this breathtaking event which has been taking place for the last 40 years will make your visit in Chicago memorable. The river is dyed green at the beginning of the St. Patrick's Day weekend.
http://www.chicagostpatsparade.com/river-dye.html
Research on the event
To learn more on what to expect you can go through the many Chicago hotel reviews for guests who had a chance to watch and be part of the St. Patrick's Day. There reviews will make you yearn for the day more. You will also be able to learn more on how the event was born by reading the reviews on the event that is now ranked almost at the same level as biblical parting of water by Moses.
When and where
The St. Patrick's Day is marked on March 14th every year. The river can be viewed well from the east side of Columbus near the bridge or at the lake shore drive. You can get a detailed map to help you locate the river from various website links.
http://www.en.wikipedia.org/wiki/Saint_Patrick's_Day