A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Colorful and chaotic stacked hotel in North Holland.

The world's only museum devoted to the wonders of fluorescence.

Stained glass windows bathe this botanical garden in cosmic light.

Abstract dinosaur models in London.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Preserved "bog person" that is over 2,000 years old.

A naturally mummified 2,000-year-old man.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A comic book store that puts the marvel back in marvellous.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Wonderland replication in progress by one persistent man.

A Gothic cathedral created from volcanic rocks.

One of the greatest maze designer’s greatest mazes.

An architectural oddity of six stories, accessed by graceful ramps.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

A beautiful and classically designed villa, with an hourly infestation of monsters.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

The world's most famous cheese caves.