This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

The drama of nature in full effect in this Nevada State Park.

A spectacular but little-known slot canyon in extreme northern Nevada, with sheer walls nearly 500 feet high and a perennial stream.

A modest stone circle in North Wales.

This massive redwood tree has a hole in the base big enough to drive through.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

400-year-old garden, restored to beauty.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

Oddly shaped rock formation, misassociated with a nearby utopian community.

This quiet park's strange sedimentary spires were named after Kodak's color film.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Come for the speed, leave in love with the desert.

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

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

The ruins of the "20-year town" lay out among the mountains of Alberta.

A monument to the egos of two railroad magnates that fell into decline along with their careers.