Bell tower juts out from a village buried under a lake.

This semi-secret storybook hedge maze is also the oldest garden in the city.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

A submerged archeological park still holds the wonders of a Roman Sodom.

"Leave a He-Man, Take a Transformer" and share a story about your real-life superhero.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

An alchemist's "magic door" stands in the middle of a Roman park.

The underground sanctuary of a mysterious ancient cult.

This ancient market is often referred to as the oldest shopping mall in the world.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Notorious artist squat renovated into legal studios.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

An unusual number plate signifies the building's saucy past.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

Since ancient times these picturesque springs have been providing bathers with healing waters.

An explosion of natural color known as "the river that ran away from paradise."

An ancient city hidden in the heart of the Sierra Nevada mountains.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

The massive gardens and office of a Brazilian sculptor.

A faux desert landscape in the middle of the jungle that sprouts oases during the rainy season.