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

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

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

A student driver's nightmare.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

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

This South London cemetery holds the remains of more than 15,000 people.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

The second oldest anatomical theater is housed in a museum of curiosities.

This collection of 80 polarizing foods aims to challenge your subjective notions of repulsion.

It's always game time at Stockholm's only museum devoted solely to video games.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Blitzkrieg bop your way through Berlin's Ramones Museum.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.