What was a common feature of medieval castles?

A common feature of medieval castles was the presence of moats and high walls for defense. During the Middle Ages, castles served as fortified structures designed to protect inhabitants from invasions and attacks. The use of high walls provided a physical barrier against enemy forces, making it difficult for attackers to breach the castle. Additionally, moats, which are deep ditches filled with water surrounding the castle, added another layer of defense. They made it challenging for besiegers to approach the walls, often preventing them from undermining the structure or using siege engines effectively.

In contrast, features like modern heating systems, concrete foundations, and air conditioning did not exist during the medieval period. Instead, medieval castles utilized stone and timber construction, which provided durability and strength appropriate for the time. The focus in castle design was primarily on defense rather than comfort or modern amenities.