See its web site for more information. At the Grand Canyon, the National Park Service has shuttle coaches between viewpoints, too. From Flagstaff, the Amtrak train Southwest Chief speeds to Chicago. At Lamy below, Amtrak passengers may transfer by van a short distance to Santa Fe, New Mexico. In Chicago, Amtrak passengers must allow at least 60 minutes for connecting trains.
More time is prudent.
Gray Line offers tours of Chicago from Union Station for those with ample time. In front of you at the intersection of Adams and Michigan is Grant Park and the Art Institute of Chicago , one of the most important art venues and schools in the United States. The Art Institute frequently has major visiting exhibits. Turn left, and walk northbound on Michigan Avenue, a major business street. Tower, Water Tower Place, and other well-known sights.