The largest drain hole in the world.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

Dramatic river bend surrounds a natural red-rocked pedestal.

A museum devoted entirely to the rattlesnakes and snake-related art.

See massive fossils that are over 200 million years old in northeastern Arizona.

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.

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

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

A whimsical, punny collection of "fence art" outside the tiny mountain town of Baker, Nevada.

The longest living non-clonal organisms on Earth.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.

Only intact Ichthyosaur skeleton in the United States.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.