NashvilleNow - Jan. 16, 2017Adventure Science CenterOpen daily10 a.m. – 5 p.m.800 Fort Negley Blvd. Hear that whistle off in the distance? It’s coming from the Adventure Science Center and it sounds the start of the holiday season! The “All Aboard for Trains!” exhibit is a model train extravaganza heralding the beginning of the holidays and delighting young and old with a wide array of magical model railroads.The Center’s Lionel O train runs on a double loop track, and visitors can control the elements on the display with buttons and levers as the trains travel through a city, into rolling farmlands, by a rock quarry, and past a replica of a county fair.