A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

London's smallest police station is barely the size of a phone booth.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

An unusual round church in London with a Templar past.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

The final resting place to 300 Victorian-era pets hides inside the city park.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

Eighty million natural history specimens call this gargantuan museum home.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Model Trains and Much More in Hamburg.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This contemplative sculpture made out of old machine parts is meant to be the first in a series of sculptures around the world.

Remnants of the Nazis' occupation of Denmark linger along the sand.

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

The only surviving piece of Copenhagen's 16th-century defensive wall.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.