The Great Smoky Mountains Railroad -- Among the most popular attractions in the mountains are year-round scenic railroad excursions. For schedules and reservations, call tel. 800/872-4681 or 828/586-8811 or visit www.gsmr.com. This scenic train journey [SSS], an exercise in nostalgia, takes you across valleys and river gorges and through tunnels. In all, there are 53 miles of track, two tunnels, and 25 bridges. A variety of round-trip excursions are offered, departing from depots in both Dillsboro and Bryson City. The trip takes from 4 to 4 1/2 hours. Prices are $49 to $61 for adults, $29 to $35 for children 3 to 12, and free for children 2 and under. There is also a Gourmet Dinner Train ride for $73 per person.