Temples adorned with intricate, erotic sculptures make up one of the "seven wonders" of India.

A startling, centuries-old subterranean marvel hides in plain sight.

A former bastion of Rajput chivalry, this massive hill fort is the site of legend and tragedy.

Modest by day, illuminated majestically at sunset.

A blooming house of worship for the masses.

This magnificent stepwell is designed as an inverted temple and adorned with 1,500 sculptures.

A complex of six forts embedded in the Rajasthan hills.

This experimental utopian "city of the future" in rural India may hold a dark secret.

Rock-cut cave complex filled with ancient Buddhist artwork.

The world's second-largest sundial, made entirely out of stone.

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

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

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.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

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

This ancient fortress was once the setting for a strange battle won with the help of a lizard.

An extraordinary "City of Caves" carved from solid stone.