- Defense: The keep was the strongest and most defensible part of the castle. It was typically built on a high point within the castle walls and was designed to withstand attack from enemy forces. The keep often had thick walls, towers, and other fortifications that made it difficult for attackers to breach.
- Residence: The keep also served as the living quarters for the lord and his family. It typically contained several rooms, including a great hall, private chambers, and a chapel. The keep was often the most comfortable and well-appointed part of the castle.
- Storage: The keep was also used for storage of food, supplies, and weapons. In times of siege, the keep could provide shelter and sustenance for the castle's inhabitants for an extended period of time.
- Symbol of power: The keep was also a symbol of the lord's power and authority. It was a visible reminder to both the lord's subjects and potential enemies of his strength and wealth.
