360° views of the city plus five floors of optical illusions and hands-on science.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Historic funicular railway, believed to be the shortest railroad in the world.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

Peace Park and the Atomic Bomb Dome.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

A beautiful bamboo trail tucked in this famous Japanese shrine.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

This Japanese national treasure was originally built in 593.

The 10,000 Torii shrine.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

America's most famous piece of self-built architecture.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Not quite the cultural gateway between China and Sweden its designer imagined.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.