A medieval castle was a fortified structure built during the Middle Ages, primarily in Europe. These castles served as residences for nobility and were designed for defense against attacks. They often featured thick stone walls, towers, and a moat to protect against invaders. Inside, castles included living quarters, storage rooms, and sometimes chapels. The layout often included a central courtyard where daily activities took place. Castles were not only military strongholds but also symbols of power and status for their owners, such as lords and kings.