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

This magnificent 18th-century hall consists of a maze of nearly a thousand interconnected passages.

Time has stopped at the house where Gandhi died.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

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

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.

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

Modest by day, illuminated majestically at sunset.

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

A blooming house of worship for the masses.

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

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

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

Sacred Indian temple that’s all monkey business.

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

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.

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

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

One of the biggest markets in Asia, under one of the continent's largest domes.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

5,000 skulls in memorial to those killed by the Khmer Rouge.

A battle between nature and architecture in the Cambodian jungle.