Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Visitors to this library are in for a real-world education in modernist architecture.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A monument to a survivor of harsh pioneer life, frostbite, and primitive surgery.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.