This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Countless grotesque faces stare out from this eerie Prague art wall.

Macabre astrological automaton clock dating to the late 1400s.

Hotel designed around a 16th century Mexican bullring.

Iconic red and white plaques show the creative names invented to navigate the city streets.

The World Wide Web was created in this nondescript corridor at CERN.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The ancient tomb acts as a calendar that keeps perfect time.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

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

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

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

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

A battle between nature and architecture in the Cambodian jungle.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Cryptic messages embedded in the New York City sidewalk.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

An ice cream parlor chain that caters to vegans and pinball fans equally.

A walk through the historic city center, under the streets of Seattle.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.