A deadly ancient portal to the underworld.

This famous city eluded concrete detection until the early 2000's.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

This Javanese-Hindu temple from the 15th century is unmissable for anyone with even a passing interest in erotic art.

These broken shards of ancient ruin may hide an ancient pyramid.

A hundred and twenty year old twelve story lighthouse located on a beautiful Indonesian island.

Think you have a tough job? Try carrying 200 kilos through a cloud of sulfur down the side of a volcano.

Sacred waters rescued from the wrath of a volcano.

Once home to Komodo dragons, this island dreamscape has a rare combination of white, pink, and black sand beaches.

These 40,000-year-old stenciled hands are older than the famous cave art in France and Spain.

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

The largest falcon hospital in the world, caring for over 6,000 feathered patients every year.

The oldest surviving mosque in the UAE has mysterious origins and unusual architecture.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

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

Whitewashed mosque contains the world's largest carpet.

An abandoned desert hamlet swallowed up by sand.