This museum of Viking vessels allows visitors to take a replica out for a spin.

A former top secret military tunnel is now stuffed with snow and open year-round to skiers.

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

A tiny village is home to the world's only diner completely devoted to the many varieties of traditional Swedish dumplings.

The world's biggest version of the popular Swedish souvenir.

A replica of the beloved character's house, modeled after the author's own drawings.

A catapult rock from Gotland’s 13th-century civil war is still lodged in Scandinavia's best-preserved medieval city wall.

A Viking man's tribute to his brother stands in Gävle's oldest church.

The charming storybook building now houses a small police museum.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

The world's biggest floating museum in Gothenburg, Sweden.

This Scandinavian island is the site of the first modern observatory.

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

Gravity seems to fail at this intriguing Swedish attraction.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.

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

A memorial to a Swedish hockey player's "encounter" with aliens.

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

Finally reunited, the three effigies now stand in a museum courtyard.

A 12th-century church with a medieval fresco and an intriguing “Greek runestone.”

In the town of Åtvidaberg, the midday sun sets off a loud cannon boom.

An eclectic sculpture park rises atop a giant pile of ashes in Sweden.

The place to be if you love vintage Swedish cars.

Sweden's oldest street has not changed for nearly a millennium.