Once the home of a hermetic monk, this cave now houses a small church.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

A student driver's nightmare.

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

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

Rebuilt remains of a temple to Roman god Mithras.

Repository for more than 22 million pickled specimens.

High-end antique collection housed in a centuries-old church.

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

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

A five-story homage to tea times past.

A celebrated bandstand at the center of what was once the worst slum in London.

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

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

Collection dedicated to brands, packaging and advertising.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

The remains of Crystal Palace Great Exhibition of 1851.

Explore nearly 400 years of English middle-class home life.