Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

The remains of Crystal Palace Great Exhibition of 1851.

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

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

This artificial cave looks like something out of a fairytale.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Looming communist pillar with a Czech twist.

A crucified and bearded female saint.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

This doorless 20th-century elevator doesn't stop or slow down.

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

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