You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

When waves crash onto this section of beach, the rocks sing a song.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The world's most active stratovolcano is almost always erupting.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Pilgrimage site for star-crossed lovers.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Five candy-colored villages on the Italian Riviera.

An Italian hillside ghost town.

This bazaar is one of the oldest in the Arabian world.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

Groups of prehistoric tombs that dot the mountains of northern Oman.

Over the dunes of the Empty Quarter, the mysterious music of the desert.

One of the largest sand dunes in the world is nicknamed the "Scary Mountain" due to its steep slope and sharp incline.

This mysterious abandoned fort looks like something pulled right from Arabian legend.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

This indoor ski resort has a mountain contained inside a mall.

Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.

The world’s largest LED display, built over an F1 race circuit.

Whitewashed mosque contains the world's largest carpet.