This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A dilapidated dock tells the story of Titanic's missed arrival.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A semi-scholarly approach to sex.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

Giant, friendly pelicans in Central London, the most unlikely of places.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

Catacombs turned marketplace.

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

This Swedish sculpture park is a unique combination of ancient ruins and modern art.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

The world's biggest floating museum in Gothenburg, Sweden.