To protect her, the King had a “small” sturdy castle built on an island in the middle of a lake. He placed the Princess there with a small faction of highly trained soldiers to protect her. As she came of age, the candidates for her husband were carefully scrutinized. The selected Prince along with the two men allowed to accompany him arrived. Their weapons and one of the men as directed remained in the single boat allowed to dock at the castle. Will he be successful in capturing her heart?
Here we have the Prince's attendant doing as he was instructed, stay in the boat with the few weapons allowed on their journey. Also we find two of the Princess's highly trained soldiers on guard making sure only this boat ever docks.
The castle was built with tan modeled after a tan-yellow brick I remember from one of my trips to England. The brown accents pull it all together into a simple, yet interesting and obviously female castle.
While apparently there is a weak point above the main doors, keep in mind this castle exists on an island in the middle of a lake. Built with the specific purpose of keeping the Princess save from harm. Any projectile will have to have come off a boat.