Hidden within this iconic mountain are a set of World War II bunkers once used by German forces.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

This overgrown mountain village has been abandoned for nearly a century.

Water and windows define this defensive Italian well.

The world's largest bamboo labyrinth is a living demonstration of the plant’s immense potential.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A public display of random paleontology.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Denmark’s never-ending bridge.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

This unique architectural wonder is home to luxury apartments.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

A fairy tale castle in modern Rome.

The single richest source of elemental discoveries in the world.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Architectureal fantasy quarter of Rome.

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This serene, turquoise lake in an extraordinary nature reserve showcases a rare natural phenomenon.