Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.

This 19th century jail was mainly used to incarcerate the drunk and disorderly.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

A hotel with a rich Wild West history of miners and bootleggers.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

"We Seceded Where Others Failed."

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The highest point in Washington state is a volcano covered in glaciers.

Stroll through a wonderland of stupendous moss-covered trees.

Beach instrument turned bed and breakfast.

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

Inside this mountain lies several kilometers of breathtaking caves.

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

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

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Sports history, made in the Arroyo Seco.

Thousands of turbines whir at at the origin of North American wind power.

Gouged in the mountain to make stage coach access easier through the Fremont Pass.

According to legend it was a nap taken under this tree that kicked off the California Gold Rush.

One of Hollywood’s favorite government buildings.