The remains of Crystal Palace Great Exhibition of 1851.

Hear the quietest sound from across the dome.

A little slice of Japan and its aesthetics in London's Holland Park.

Catacombs turned marketplace.

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

A hands-off space for graffiti artists to hone and display their skills.

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

A student driver's nightmare.

One part local history, 99 parts gruesome haunted house.

A tongue-in-cheek arcade where the games are based on everyday life.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

An ornate doorway leads to the former site of one of the city's oldest society of merchants.

The Bristol Camera Obscura housed in an ancient windmill.