Moonbows over Kentucky.

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

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.

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

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

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

A miraculous natural phenomenon known as "the spring that breathes."

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

The center of the only hemisphere that awards visitors with a commemorative coin.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

The biggest solar telescope in the world helps reveal the secrets of our sun.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

America's only nuclear missile silo open to the public.

A stealthy Apache hideaway that became the haunting site of a mass grave.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A registered historic landmark shrouded in unsettling local legends.

A 2,500-pound wooden nickel makes this woodworking museum easy to spot from the road.

Belly up to the bar in Cowtown, don't forget to buy some boots.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

Ghost town with a beer-drinking goat for mayor.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

The final resting place of the living embodiment of the famous Forest Service symbol.