Couch Tomb

Historical marker location:

Chicago, Illinois

( Marker is at the intersection of West LaSalle Drive and North Stockton Drive, on the right when traveling east on West LaSalle Drive.)

Marker installed: 1999

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.