The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

The final resting place of New Orleans' most famous voodoo priestess.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The world-record holder for the longest bridge stretching continuously over water.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

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

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

A gray market run by Burmese Indians offers a portal to a forgotten period in history.

This Gothic-style church is reputedly built atop the remains of one of Jesus's apostles.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.

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

World's most expensive home.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

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

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

On the Pakistan-India border the militaries perform an elaborate theater of aggression each and every night.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

A free, canine-friendly alternative watering hole near the more famous Barton Springs.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.