This otherworldly palace-mausoleum complex is the stuff eternal dreams are made of.

The second-longest continuous wall on the planet protects a hidden secret in the deserts of India.

The remains of what was, not so long ago, the world's largest city.

A mecca for India's Jains.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

A lake with hundreds of ancient skeletons surrounding it. The surprise is what killed them.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

A little slice of Japan and its aesthetics in London's Holland Park.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

This hidden green space is the city's second largest conservatory.

Rebuilt remains of a temple to Roman god Mithras.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.