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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An eerie, derelict amusement park in Berlin.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

This overlooked street light once served as a KGB dead letter box.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

You will not be able to miss this building.

Black cat statues guard this temple-like Egyptian revival factory.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

The last four extravagant street signs of London's historic banking street.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

The broken skateboards that became a poignant memorial to a murdered skater.

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

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

Taxidermied animals galore, by appointment only.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

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