Hidden in an enchanting ravine, numerous mysterious sandstone grooves hint at ancient pagan rituals.

The unique design of this former quarry provides ideal acoustics for concerts.

These two springs are tied to several legends, one of which involves the travels of Saint Olof.

Believed to be the country's tallest waterfall, the Njupeskär is actually much smaller.

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

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

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

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

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

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

The internet as provided by a James Bond villain.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

This basement museum explores the art and artistry of fascism.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

Sail in for a ’dam good slice.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

The attic of a four-century-old canal house hides a clandestine church.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.