15 monolithic temples emulate an eroding sand castle.

Nineteen ancient rock-cut Buddhist caves can be found on the outskirts of Mumbai.

An architectural marvel that dates back to the zenith of Indian architecture.

A centuries-old fortress city lies in ruin.

The ancient water tanks remain some of the ruined city’s most beautiful architecture.

This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

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

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

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

Sacred Indian temple that’s all monkey business.

A mecca for India's Jains.

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.

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

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.

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.

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

An ancient Greek monument and a Byzantine church coexist inside this cave.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.