This abandoned fishing settlement may well be the greenest village in the world.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A fifth-century temple improbably built into the side of a cliff.

A part of the world's largest marsh seems to be growing bright red Martian grass.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

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

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

A historic house left in "dramatic still life."

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Explore the quarry where the marble was sourced for Michaelangelo's David.

A young Italian couple has been locked in an embrace for over 6,000 years.

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

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

What might look like a cliffside sacrificial altar at first glance is actually a stone compass pointing to cities and lighthouses all around the world.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

A failed attempt to control drifting sands yielded a gnarled sylvan wonderland.