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

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

Remote town home to Himachalis, Israelis, and tons of hashish.

This Jewish bakery, among the last in the region, sells legendary sweets from a century-old storefront.

A centuries-old fortress city lies in ruin.

The world's largest secondhand book market is a haven for bibliophiles and bargain hunters.

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.

Modest by day, illuminated majestically at sunset.

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

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

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.

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A lush green oasis in the middle of Chicago.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A popular European tradition makes its way to the states on one of America's most famous bridges.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".