Building on the Skansen Krona fortress began in 1641 its main purpose was to defend the city against from Danish invaders. It was completed in 1695. The name means the Crown Fortress and takes its name from the crown on the top. A second fortress has a lion on top and is therefore called the Lion Fortress.
The Krona is on a central hill in the city and has great views of the city. Its main use is as a park for walking the dog, summer picknicks, views of the city and a place to celebrate new years eve.