This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

Let Ouray’s tallest waterfall sweep your breath away on a dealer’s choice of scenic hikes.

A marble cornerstone marks the location of what could have been a presidential palace.

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

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

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

Legends surround this jagged rock formation in the New Mexico desert.

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

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

The location where the iconic movie character declared it was time to go home.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

A house carved into a rock in the 1940s.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This spooky statue sits outside a famous Prague theater.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

The statue of a cursed knight is said to come to life every 100 years.

This interpretive path lets you get up close and personal with dinosaur bones.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.