Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

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

The fifth-longest natural arch in the world, and the longest outside China.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

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

The unusual patterns in this rock formation result from two distinct modes of weathering.

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.

A tunnel with windows, so you don't miss out on the impressive views.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.