These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

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

In 1847, Brigham Young climbed this hill to survey the Salt Lake Valley and saw a fine place to build a city.

This mural changes every few years.

This former wildlife sanctuary is being transformed into an art park.

Almost all that remains of a town dedicated to supporting the First Transcontinental Railroad.

This magnificent natural sandstone bridge is one of the largest in the world and is an iconic symbol for Lake Powell.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

These tall, red sandstone pinnacles outside Moab are often forgotten amid their more famous neighbors.

A quirky old tree covered in tokens, cans, and bottles of wishes.

This granite monument at the site of an ill-conceived tourist attraction is built from the same stone as the Mormon Temple.

Pyramid home to an obscure religious group that practices modern mummification.

A replica that won't float away.

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

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

This popular cave pool is truly magical, despite the crowds.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

This crumbling Art Deco movie palace in Mexico City has been abandoned for two decades.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The only castle in North America to ever house European sovereigns.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.