
In a guide to St. Paul, I noticed that they had an advertisement for a model railroad setup. I like looking at model railroad layouts, and I am actually also the former (and very inactive) president of the Rose-Hulman Model Railroad Club.
The Twin City Model Railroad Museum, had a really nice layout. It took up an entire room and was probably at least 50'x50'. The shopping mall in which it was located was actually a former repair house for steam locomotives. The model was of the Twin Cities back in its height of railroads (I am not sure of the years). Their layout covered quite a range, from a detailed downtown, to an elaborate rail yard, to stretches of rail through the county.