A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

This statue standing near Sweden's southernmost point was based on the grandmother of a modern movie star.

Sweden's southernmost point is located in this charming fishing village.

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

These Bronze Age rock carvings are among the oldest in the region.

These mysterious circular formations are actually remnants of 19th century gristmills.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

An abandoned industrial site turned into a picturesque swimming hole.

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

Known locally as the Jungfrutornet, this Medieval tower hides a dark legend.

Buried beneath an unassuming Gotland farm was the largest collection of Viking silver, mostly of Islamic origin.