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

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

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

The charming storybook building now houses a small police museum.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

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

A large collection of ancient runestones decorates this university courtyard.

Legend says this fabled well held part of a mythical Norse tree.

The official meeting point for the oddly named governing assembly of ancient Sweden.

This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

Mysterious painted skulls in Moravia.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

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

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