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

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

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

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

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

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

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

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

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

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.

These early tent-shaped grave coverings are unique to Appalachia.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The largest source of fossilized insects anywhere.

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

This interpretive path lets you get up close and personal with dinosaur bones.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

Above Breckenridge, a destructive mining technique sits sunken in a small pond.

Erosion and time have created a naturally-formed water park.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.