A Buddha-filled cave that is named after a giant monster spider.

A vast, otherworldly collection of Buddhist stupas.

Caves full of Buddhist statues, incredible rock formations and a deserted lagoon.

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

Gigantic unfinished stupa and the world's 2nd largest bell.

A grand imperial capital left to fall into magnificent ruin.

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

Fowl, love and death in Vietnam.

These crumbling towers are some of the last remnants of a centuries-old Vietnamese culture.

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

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

An extravagant monument to an extravagantly unpopular Emperor.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

World's largest cave was only discovered in 1991, and now offers tours to the public.

A winding, blood-red tunnel of hardened lava navigable by foot.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This tiny museum's sizable collection is jammed into a former underground public toilet.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

A jungle cave in Peru of unknown depths, otherworldly sounds, and strange nocturnal birds that navigate by echolocation.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

A mysterious pre-Incan ruin believed to have miraculous healing powers.

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.