The oldest residential street in Europe also features an optical illusion.

A lonely beacon, precariously perched atop a remote sliver of rock.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A strange house built only at night, with rumored mystic inspiration.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A clear blue swimming hole with hidden caves, still unexplored.

For those going through a life transition, a place to leave behind a piece of your former self.

Owned by Native American women, this brewery is a celebration of indigenous culture in the American Southwest.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

This medieval "painted village" is famous for its geometric facades.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

This tiny little island has, as the name says, just enough room for its single house.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

The center preserves and houses artifacts ranging from the colonial era to modern times from across Appalachia.

Nestled in an unassuming residential area, this "forbidden forest" is rumored to spirit away those who dare to enter.

At night, a grove of towering redwood trees growing through the pavement block out all light from the so-called “Dark Park” of Madrone Avenue.

The 953 windows undoubtedly make this the world's most beautiful screened porch.