It's not very big. There are six cannons on it. I heard it was used to prevent Denmark from attacking earlier, but it has never been used. It can overlook the whole city of HAGA. It has a super view. When you go up, you can walk up a steep staircase. It feels like a hundred steps to the sky. When you come down, you can walk down a circular road. It's a restaurant now. So it feels that the atmosphere of history is not very thick. When you go, you don't open it. It's a pity that I didn't appreciate the scenery inside the castle.