Magnus IV of Sweden
The main tourist attraction of the region, but also one of the Top 10 Visitors Attractions in Finland is the Raseborg Castle (Raaseporin Linna). It is supposed that the castle was built by the royal council leader of Magnus IV of Sweden in 1370, besides to have sustained continuous developments up to the 16th century. Raseborg Castle was designed to defend the then Swedish territory of Southern Finland. It would also go on to be the focal point of clashes with the Danes as well as pirates.