Wikipedia

"The Grand Canyon Railway (reporting mark GCRX), is a passenger railroad which operates between Williams, Arizona, and Grand Canyon National Park South Rim.

The restored Santa Fe Railway Station in Williams now serves the Grand Canyon Railway's daily Williams Flyer (Williams to/from Grand Canyon), Seasonal Polar Express, and is the terminus for other special events trains operated by the railway. The Williams Depot also offers twice daily Amtrak Thruway Motorcoach service connecting to/from Amtrak's Southwest Chief trains at Williams Junction. Open Road Tours shuttles also call at the depot and offer passengers supplemental service to Grand Canyon South Rim, Flagstaff, Sedona, and Phoenix Metro Center"