If you happen to be in the Detroit area you can still see whats left of some of the wide boulevards where the interurbans ran. One place I can think of specifically is Telegraph Road near Oak Park, and then another area where some of the electric cantenaries are still in place, down near Westland and Southgate. But if you want narrow gauge, you have to go to the Starr Park in Royal Oak, on 13 Mile and Crooks Rd.; theres a nice 7 1/2" set up that runs in the summer on certain weekends.
Oh and one last thing, theres some steam locomotive displays in Durand and then one across the river in Windsor, Ontario... that one happens to be right next to a bunch of clubs; its an interesting photograph if you get the chance.
John Hillier