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

This unique bridge is one of the last of its kind in Sweden.

Believed to be the first museum dedicated to the films in the world.

A plaque on this tiny Swedish island commemorates an unusual Cold War standoff of Soviet submarine intrigue.

For decades, these ships have been lying in rust awaiting a final decision on their fate.

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

Art becomes an enchanting part of the environment at this wooded sculpture park.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A surreal museum of extraordinary industrial objects.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

Mountain where Jesus was first tempted by the Devil.

This cemetery features modernist statues as strange as its name.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Turntable anonymously received orphans, alms, and groceries.

The single richest source of elemental discoveries in the world.

The suspected burial mound of legendary Viking Björn Ironside.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Sweden's first electric elevator remains hidden within a fortress-like building.

A miniature model of the iconic Stockholm department store.

It's always game time at Stockholm's only museum devoted solely to video games.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.