These medieval skyscrapers dominate the skyline of this small Tuscan town.

Abandoned cemetery of the former Psychiatric Hospital of Volterra.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

Along the old Route 66 is an abandoned trading post made from old telephone poles, built by a former circus clown.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

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

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

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

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Rippling sand dunes frozen in the Arizona rock.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

A local landmark with generations of spraypainted messages, and more being added each day.