A centuries-old copper mine that once provided two thirds of the world's copper supply.

A centuries-old iron mine is now a paradise for explorers, divers, and spelunkers.

This 2,000-year-old stone maze is one of the oldest in the country, but its purpose is still a mystery.

This abandoned urban warfare facility is a dream come true for airsoft and paintball enthusiasts.

Few would expect the world's oldest preserved oil refinery to be found in Sweden.

This railroad track was so secretive that it was omitted from all maps.

This declassified Cold War bunker hosts a large collection of Swedish aircraft.

This abandoned Swedish folkpark offers an amazing view over the town of Överkalix.

A geological wonder that helped fuel myths of trolls and giants.

The dome-shaped reservoir of this old water tower produces unique acoustic effects.

The world's only above water sand volcano, believed to once be the bathtub of a priest.

Take a schvitz just like an infamous Soviet dictator while his unblinking eye looks on.

Gravity seems to fail at this intriguing Swedish attraction.

Uppsala's adorable feline sign celebrates a popular children's book set in the Swedish city.

A botched 18th-century canal silenced one of Sweden's most magnificent waterfalls.

This fantastic cave remained unexplored until 1948 when three schoolboys discovered a hidden entrance.

The place to be if you love vintage Swedish cars.

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.

It was meant to help transport wounded soldiers to a secret underground hospital.

This Swedish automobile graveyard is a beautiful gallery of decay, but woe be to any who would steal a souvenir.

Visit the home of Sweden's beloved fictional character, Pippi Longstocking.

A Japanese video game arcade hides in the back of a Swedish pool hall.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

A museum dedicated to the history of psychiatric treatment featuring a gallery of art made by patients.