A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

An outstanding and haunting glimpse of the horrors of the Great Famine of Ireland.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This Denmark theme park is part family attraction, part experimental archaeology project.

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

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

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

Legend says this cave housed a 16th-century cannibal and his family of 48.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

This former small-town cinema palace was built with the remains of a luxury liner.

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

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

This museum promotes informed contraception by documenting its often secret past.

Fantastic stories on a miniature railroad.

One of the world's largest collections of pharmaceutical artifacts.

This small museum displays a collection of outsider art and scale models of past "treatments" for mental illness.

Museum featuring strange and enchanting toys of the past.

These spooky and unusual stone formations create an underworldly landscape.

Lucerne's central prison was converted into a tourist hotel with a bare minimum of changes.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.