R.K.
Mount Trashmore in Evanston, a public park site, on Oakton, a little east of McCormick, and if you're on the south side, Palos Park....
Unfortunately the cook county forest preserve has closed the fabulous (and free) tobaggon run at milwaukee and devon avenues... when i was a kid they even had tobaggons to rent for some ridiculously cheap price that any kid could afford.
R. Katz, Psy.D.
www.richardkatz.org