Charmed waters at Varberg Fortress, Sweden

The shaft that once ran 340 metres down

was part of a 14th-century castle in Sweden. Varberg Fortress, on the coast, sits

between two lakes - an unlikely pair. Its territory shifted through Danish,

Norwegian, and Swedish hands, and by the 16th century had become a strong

fortress. King Christian IV of Denmark expanded it further.

After the defeat of King Gustavus Adolphus of Sweden in 1645, it became Swedish again.

For centuries it served as a military outpost and a prison, until the 20th century.

Now it's a museum, with a room for the night. The coolest artifact you'll find

is the bullet supposedly fired from the ship that killed King Charles XII.

Locals swear there's a lake monster guarding the moat. Two witnesses claimed

to have seen something slithering in the dark water in 2006.

Described as brown, furless, and with a 40 cm tail, it killed a duck.

Today, a peaceful stay around the quiet waters is the only danger you'll face.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons