Must See: Time-Lapse of the Chicago River Being Dyed Green

Chicago River near Trump Tower and american flag, which is dyed green for St. Patrick`s day, as crowds surround scene.

Photo: Moment RF

It's a tradition in the Windy City to dye the Chicago River green for St. Patrick's Day. How do they do it? A bunch of boats go up and down the river shooing green dye into the water. Here's a time-lapse video from this year.


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