I thought you were referring to this place,
http://en.wikipedia.org/wiki/Roadside_America
Just a note the scale is listed as 3/8th inch to the foot and the trains are 'O' gauge which is nominally 1/4th inch to the foot. The original display used Standard gauge trains but switched to 'O' gauge when the larger ones became hard to find. I went there several years ago but the display was deteriorating because the daughters are running it and didn't have the mechanical ability to keep it up, but I understand that has changed. I've heard that someone has come in to help keep it up and do the necessary repairs. It would really be nice (from my perspective) if they would switch back to standard gauge now that new equipment is available.