Where would you find portcullis?

A portcullis is typically found in medieval castles and fortifications, serving as a heavy grilled door that can be dropped down to block entry. It is usually positioned at the entrance gate, often reinforced with metal and designed to enhance security. Portcullises were used in conjunction with other defensive structures, such as drawbridges and moats, to protect against attackers. Today, you might also see portcullis designs in architectural elements of some historical buildings or themed attractions.