These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A temple to modernity, tucked away amid Barcelona's more well known museums.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A beautiful but toxic fountain of mercury.

A three-table eatery sits inside the home-kitchen of a seafood virtuoso in Bangkok's Chinatown.

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

Time-frozen department store of dangerous and dusty relics.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

Bangkok's men with dangerous jobs come here in search of protective talismans.

Derelict airplane bodies serve as both home and income for three Thai families.

Drink and learn at this striking ode to coffee culture and history.

Fowl, love and death in Vietnam.

This Vietnamese bar doubles as a multistory labyrinth.

This former monastery in Vietnam now houses a chocolate shop and museum filled with centuries-old taxidermy specimens.

A Surreal flight of architectural fancy in Vietnam's Central Highlands.

A sculpture park that takes the use of clay to a whole new level.

A desert in southeast Asia, complete with a beautiful lake covered in lotus flowers.

The wartime prison now features haunting sculpted reenactments of the atrocities that took place there.

Executed at age 19, this Vietnamese schoolgirl is now a national hero and symbol of revolutionary spirit.

Nearly three tons of weapons from the Vietnam War still remain in this small, hidden museum.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.