I live in Chicago, and have seen a number of tanks and AFVs on display here. Here are the examples I know about:
1. A Stuart on Grand Avenue by California (or so...) in a park.
2. Another Stuart in DeKalb, not far off the main drag.
3. There is a Pershing on Lake Street in one of the western suburbs, not exactly sure of the cross street.
4. Also, not really my neighborhood, but cool nonetheless... what appears to be an amphtrack (Marine landing AFV) right off of Route 20, west of Michigan City, Indiana.
5. Oh, and what appears to be an outdoor museum (that has a Sherman out front) just into Wisconsin off the I-94, exit 348.
Other than that, I remember a tank on the Eight Mile Armory in Southfield Michigan. I remember seeing an article about the M-60, and I think this one was a one-only model of a M-60A-2. Could be wrong there, though.
What about you guys? Do you know more in Chicagoland? Or elsewhere? What priceless relics are in your neighborhood?
PS I remember seeing one - don't remember the type - on a corner while riding the train south out of Chicago a few years back...