Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

This strange geological landscape erupts with sudden bursts of water.

A perfect turquoise lake colored with glacier dust.

An unusual and powerful memorial in which earthquake victims are remembered by empty white chairs.

A wooden hut from the Heroic Age of Antarctic Exploration.

Antarctica's bustling metropolis, originally established by Richard E. Byrd.

The place of worship erected not once, but three times in one of the most desolate places on Earth.

Contains a wealth of information about the first exploration and later use of the Green and Colorado Rivers.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

A popular rock that acted as a waymarker for American pioneers.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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.

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

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

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

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

A house carved into a rock in the 1940s.

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

A small oasis not far from downtown Moab.

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