An unassuming secret door once led to a legendary watering hole.

A desert in southeast Asia, complete with a beautiful lake covered in lotus flowers.

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

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

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

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

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

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Central City celebrates its most famous madam by racing beds down Main Street.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The first declared National Monument in the United States.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

The hallucinogenic center of the ancient world.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Hauntingly beautiful totem poles left by the Haida.

A trading post in the North Pole where children send letters.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.