This hilltop warren of monastic dwellings is the result of centuries worth of Mongol attacks.

Hidden in the shadow of a rocky fortress is one concubine’s long-forgotten legacy.

A complex of six forts embedded in the Rajasthan hills.

This ancient Hindu temple is covered in thousands of colorful statues and has a long mythological history.

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

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

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

This peaceful Sikh gurudwara serves around 50,000 free meals every day within its gilded walls.

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.

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

Sacred Indian temple that’s all monkey business.

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.

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

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

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

Centuries-old bridges grown from tangled roots.

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

A tiny museum dedicated to the charkha, a traditional spinning wheel that became a symbol of national resistance during Gandhi's freedom movements.

On the grounds of the famous Qutab Minar lies another unfinished tower meant to be twice as tall.

The former Willingdon Airport started operations in 1929, in India's capital, Delhi. Now, it's used for maintenance runs and helicopter rides.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

Ancient traditions and surreal birdwatching come into sharp relief along one of the world's most polluted rivers.