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

A nearly unconquerable island-fort in the Indian Ocean.

A centuries-old lookout post still sits atop a natural stone spire.

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

A blooming house of worship for the masses.

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 complex of six forts embedded in the Rajasthan hills.

A single tree's 2,800 aerial roots give the appearance of a complete forest.

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

A mecca for India's Jains.

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

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

Centuries-old bridges grown from tangled roots.

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

The tallest unclimbed mountain in the world remains poorly charted out of respect for local spirits.

This colorful overpass is one of Bhutan's longest suspension bridges.

The small sanctuaries lie just off the beaten path near one of Bhutan's most famous attractions.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

A piece of India inside a piece of Bangladesh inside a piece of India inside a piece of Bangladesh.

Enormous statue of the Emperor of the Mongols.

Sacred Buddhist home of some spiritual monkeys.

These excavated burials from the Tarim Basin are wrapped in mystery.

Large rock high in the mountains of Yunnan that is naturally shaped like a chair, complete with arms.