Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This doorless 20th-century elevator doesn't stop or slow down.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The first museum in the world devoted to sexual gadgetry.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

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

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A free public golf course hides in plain sight in the heart of Scotland’s capital.

Now home to a drinking establishment, this building has a macabre history.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This king penguin is a knighted brigadier of the Norwegian Army.

The most loyal of little dogs, or a Victorian era publicity stunt?

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

Protecting the dead from opportunistic body snatchers.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

The final resting place of soldiers' loyal canine companions.

A book bound in the skin of an infamous criminal, along with countless other specimens.

360° views of the city plus five floors of optical illusions and hands-on science.