So...this is interesting...I've lived in Green Bay for just over 4 years and never knew this existed. It's not even far from my house.
Apparently, there is a tree...that people tie laces together when they are worn-out and just TOSS them into the tree...they stay there...and it's considered ART!
I think this idea seems kinda awesome. Check out 15 Wisconsin Secrets thanks to Movoto HERE:
Some other cool interesting stuff too!