Half-size replica of the Taj Mahal.

An ancient iron pillar in Delhi that seems to be rustproof.

A centuries-old fortress city lies in ruin.

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

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

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

Rock-cut cave complex filled with ancient Buddhist artwork.

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

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

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.

Deep in the Thar desert, a temple crawling with thousands of holy rats.

This abandoned fort is said to be the most haunted place in India, so much so that entry is prohibited after sunset.

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

A blooming house of worship for the masses.