Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

Khmer Rouge's high security prison.

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

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

A battle between nature and architecture in the Cambodian jungle.

A grand imperial capital left to fall into magnificent ruin.

The oldest teak bridge in the world is made from the remains of a royal palace.

This gem-encrusted temple is said to contain some of the Buddha's hair which can make the deaf hear and the blind see.

A vast, otherworldly collection of Buddhist stupas.

Myanmar's Mount Olympus atop a 2,500-foot volcanic plug.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.

This golden temple is surrounded by hundreds of stone tablets that comprise the "world's largest book."

A grand example of 19th century Burmese teak architecture, and the most significant of Mandalay's historic buildings.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

A white Buddhist temple with a golden restroom.

Where an entire elephant skeleton, a snakeskin table runner, and thousands of animal remains become art.

A condom-covered Thai restaurant that is more concerned with birth control than food.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A marvel of Byzantine engineering under the streets of Istanbul.

Turkish adventurer antiques in the heart of the Grand Bazaar.

A fountain standing as a testament to a doomed alliance.