Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

Despite its name, this route in southern Utah offers a heavenly day trip.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

This research center for rare prosimians is studying how they sleep to help prolong human life.

Just outside of Nairobi lies a large estate surrounded by endangered Rothschild giraffes, who have been fed from the window by Mick Jagger and Walter Cronkite.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

The Atlantis of Cape Cod reemerges during the lowest of tides.

A Spanish forest is filled with mysterious stone carvings.

The most magnificent bottle house in a town strangely full of them.

Science fiction's grandfather has a fittingly marvelous tomb.

Final resting place of one of the classic authors of horror literature.

A fiberglass jungle, deep in the wilds of the Cleveland suburbs.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

The rusty hull of this 1899 ship serves as a tribute to explorers of the bottom of the world.