A bell tower is a structure designed to house one or more bells, often found in churches, town halls, or other significant buildings. These towers can vary in height and style, ranging from simple designs to elaborate architectural features. The primary purpose of a bell tower is to signal time or call people to gather for events, such as services or celebrations. Many bell towers are equipped with a mechanism that allows the bells to be rung manually or automatically. Some famous examples include the Campanile di San Marco in Venice and the Big Ben tower in London. These towers not only serve a functional purpose but also contribute to the cultural and historical identity of their locations.