Actually the DeVry site is a historical ruins site of the old Riverview Park
http://www.defunctparks.com/parks/IL...erviewpark.htm in the city. There is a spot in what is the old picnic area that is adjacent to the old "Shoot the Chute" water slide where the twin concrete chutes are still visible (and part of a jump!).
If you do a little research reading first you'll have far greater appreciation for the sacred ground that you'll be bashing on. Once again, it'll be a playground and the beer will flow freely.....