Flagstaff is an Amtrak train station at 1 East Route 66 in Flagstaff, Arizona. The station, formerly an Atchison, Topeka and Santa Fe Railway depot, doubles as a visitor center and rental car pickup and is located in downtown Flagstaff. Northern Arizona University is located nearby, as are the Lowell Observatory (where Pluto was discovered), Sunset Crater, the Walnut Canyon National Monument, ski resorts, and other attractions.