English antique dealers with a taste for the unusual.

The television series' iconic giant foot was borrowed from this classical painting.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

The remains of Crystal Palace Great Exhibition of 1851.

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

A student driver's nightmare.

Banksy gives themself artistic license with this piece of London street art.

Hear the quietest sound from across the dome.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

An unusual round church in London with a Templar past.

The largest of London's subterranean rivers and once a mad, bad center of London life.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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.

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

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

The most visited, and possibly most controversial, museum in Germany.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Started as a kitchen garden, now the second largest botanical garden in the world.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

A brush maker used his factory to protect blind Jews from the Gestapo.