A battlement is a defensive architectural feature commonly found on the walls of castles and fortifications. It consists of a series of alternating raised sections, called merlons, and lowered sections, known as embrasures. This design allowed defenders to shield themselves while providing openings to shoot arrows or firearms at attackers. Battlements were popular during the Middle Ages and are often associated with medieval castles and fortified cities. They served both practical and symbolic purposes, representing strength and security. Today, battlements can still be seen on historical buildings and are often used in modern architecture for decorative purposes.