Go see the small but magnificent model railroad exhibit, All Aboard!, at the Museum of Science!
I just got back from visiting it. This labor of love by the dedicated volunteers of the HUB Division of the National Model Railroad Association is split into several discrete scenes at various scales, all with very detailed (and lighted!) structures and scenery. And of course trains move through the scenes at appropriate speeds.
Anyway, since pictures speak louder than words, here are the eight photos that I took when I was there. How many landmarks can you spot?