Public Service Building

Historical marker location:

170 N Ottawa St, Joliet, Illinois

( Marker is at the intersection of North Ottawa Street (Illinois Route 53) and U.S. 30, on the left when traveling west on North Ottawa Street.)

The Chicago River was famously dyed green for the first time in 1962 to celebrate St. Patrick's Day. The tradition has continued every year since then, and now the river is dyed green for the holiday using an eco-friendly vegetable dye.