The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The first declared National Monument in the United States.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This is one really big nut.

The world-record holder for the longest bridge stretching continuously over water.

This skewed English house has looked like it's going to fall over for centuries.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

A monumental cross hides in the trees in Golden Gate Park.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

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.

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

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

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

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

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

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

The notorious Wild West outlaw was raised in this unassuming abode.

Come for the speed, leave in love with the desert.

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

This geothermal hot spring hides beneath a slowly growing mineral dome.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.