Are you a ferroequinologist? One who studies trains (from Latin: iron horse and a subject of study). Or, maybe you had trains as a kid. Maybe your kid has trains or loves them. Then, this is worth the price of admission. See a 24-by-24-foot model of the Louisville Connector Line and a 60-by-80-foot model of the Miami Valley Modular Railway. Free workshops and demonstrations are offered, and dozens of hobbyists, modelers and vendors will be displaying and selling.