Stairs often replace streets on the steep slopes of this old mining town.

Take a dip beneath the stalactites in this amazing cenote.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

Few of the many visitors to this resort town know of its hidden Maya ruins.

The current Eureka County Courthouse replaced an all-wooden structure that had previously been an ice-skating rink.

Local history museum with mammoth bones and an old myth about local giants

Small Nevada town embraced its designation as the "Armpit of America" with an Old Spice-sponsored festival.

A beautiful geyser under environmental threat.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

An architect's childhood fantasy treehouse made real.

The old fire tower is one of the last of its kind in the United States.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

After this former brothel closed, its interior remained almost frozen in time.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

Home to a timed geyser created by complete accident.

When in Idaho, sleep in a giant potato.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

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

At the time of its completion, it was the tallest dam in the world.

These planks were originally installed to hold the dead.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

A spoke-tacular artwork constructed from recycled bicycle rims.

Once called the Jersey Lilly, this former saloon was the domain of infamous Judge Roy Bean.