The fences outside some of South London's estates are made from recycled World War II stretchers.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

The remains of Crystal Palace Great Exhibition of 1851.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

Famously misunderstood wonder of the ancient world

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

This art installation pays homage to the famed stones of European lore.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

A museum dedicated to the former country.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

A pair of connected skyscrapers form this symbolic gateway.

A Serbian church lit by chandeliers made of weapons.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

This French colonial post office is arguably the grandest in all of Southeast Asia.

A memorial to the monk who set himself on fire to protest the persecution of Buddhists in Vietnam.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Vietnam's largest Buddha statue depicts a female sage.

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