Built in the 17th century, it is not very big. The city wall is 4,5 meters thick and there are six cannons on it. I heard that it was used to prevent Danish attacks, but I have never used it. It overlooks the entire HAGA city. When I walked on a very steep staircase, I felt like a hundred steps to the sky. When I came down, I walked on the circular road. The castle is now a restaurant, which is still a very good place. I recommend everyone to come and play.