CHICAGO -- Everyone is Irish on St. Patrick's Day and Chicago makes no exceptions!
Every year, the Chicago Journeymen Plumbers Local Union 130 UA dyes the Chicago River green by using a secret orange dye.
The annual tradition began in 1962 and it brings thousands of people to the riverbanks and nearby streets.
We caught up with some attendees for their reaction:
"I've never been anywhere in the world with a St. Paddy's Day like this."
"I did not expect the river to be so vibrant."
"Everyone is green. Everyone is ready to have a good time. Everyone is ready to love and party."
"It's nuts. You got people everywhere in green, celebrating, maybe drinking a little bit. But, it's a very fun atmosphere."
"Nobody does it like Chicago. St. Patrick's Day is the best here."