The oldest still-inhabited hill fort in India looks like a magnificent golden sandcastle.

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

Modest by day, illuminated majestically at sunset.

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

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

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

Rock-cut cave complex filled with ancient Buddhist artwork.

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.

Centuries-old bridges grown from tangled roots.

An 18th-century fort in the business district of Mumbai.

A drinking water fountain in the heart of Mumbai, built by a father in memory of his son.

A 19th-century church in South Mumbai built to commemorate those who died in the First Anglo-Afghan War and the retreat from Kabul in 1842.

A heritage structure designed in 1882 honors a Parsi philanthropist.

The place of worship for Zoroastrians, Mumbai's Parsi fire temples use fire and ash for purification.

In Mumbai, a bright blue synagogue is the largest one for the Baghdadi Jewish community in Asia.

A Zoroastrian funerary tower where excarnation rituals are carried out is threatened by the area's dwindling vulture population.

A 66-million-year-old rock formation stands tall over Mumbai, offering stellar city views.

World's most expensive home.

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