One of the most iconic neon ads of former East Germany.

The narrowest street in the world is in danger of closing up entirely.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

You haven’t properly toured a winery until you’ve slept in an actual wine barrel.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This historic London residence was once the womb of Scientology.

The secret wartime bunker built on the platforms of an abandoned Tube station.

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

These ornate arches show how the course of the River Thames has changed.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

A memorial to a dog that inspired rioting in the streets of London.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Collection dedicated to brands, packaging and advertising.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.