Last month Dear Husband and I went to the Amherst Railway Society Model Railroad show at the "Big E" in Springfield, Massachusetts along with 25,230 other people. It seems to me that most of them were middle-aged men who were as awestruck as grade school kids at DisneyWorld for the first time. There WAS a lot to see.
There were miniature buildings with amazing details. (note the variation in window shades in the warehouse on the left.
Others liked trains from the Era of Steam. Others liked trains and scenery from a particular era. It seemed that the 30's and 50's were popular. (Probably the boyhood decades of many of the attendees!) Some liked urban settings and others liked more rural ones.