If you go
Grand Canyon Illusion: National Geographic Visitor Center, Tusayan, Ariz.; www.explorethe?canyon.com or 928-638-2468. Free. Art on display through Oct. 31. Visitor center open from 8 a.m. to 9:30 p.m. daily (all times MST). Near the South Rim of the Grand Canyon, 1.5 miles from the entrance to the park.
More on the artist: www.?kurtwenner.com/.