A bus with a butt and biceps to put Olympic athletes to shame.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

A South African bar inside a hollowed out 6,000-year-old Baobab.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

A 140-year-old castle with underground caves hidden in San Francisco.

This shop specializes in oddities and Victorian-inspired wonders.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A psychedelic labyrinth on the San Francisco bay.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

An incarceration museum on the spot of possibly the oldest prison in England.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A quirky and charming restaurant founded by artists.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

An eclectic mix of influences rot together in harmony in this India necropolis.

This once-derelict building is now one of the most beautiful bookstores in the world.