Be sure to see the gigantic HO scale (1:87 ratio) model railroad exhibit in the Exhibitors Building. We've made a bunch of new additions since last year! Sponsored by the Cumberland Division, Southeastern Region of the National Model Railroad Association and Tennessee Central Ry Museum, the exhibit will have several trains running at all times, including freight and passenger trains. Many locomotives, both steam and diesel, are sound-equipped for a more realistic experience. The model railroad includes a circus with animated midway rides, two large freight yards, and a modern digital command control system that allows for independent operation of each locomotive. Equipment representing past and present Middle Tennessee railroads will be operating every day of the fair.