Once the path of a railway tunnel, now home to thousands of glowing insects.

An Australian lake whose pink hue defies scientific explanation.

Australian Lake set aglow by Noctiluca Scintillans.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

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

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

A kaleidoscopic warehouse-maze of handmade neon signs.

A 30-acre garden inspired by the principles of modern physics.

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

The world's largest collection of witchcraft regalia.

Famously misunderstood wonder of the ancient world

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

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

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

An intricately carved Viking church overlooks a glistening fjord.

A stunning silver lining to global warming's gloomy cloud.

Home to three historic ships from the age of Vikings.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A serpentine highway twists and turns over the treacherous Norwegian Sea.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Shrine to Japanese water-goblins, complete with their preserved body parts.