A crane is a large, tall machine used for lifting and moving heavy objects, often found at construction sites. It has a long arm, called a boom, that can extend and rotate to reach different areas. Cranes are essential for building skyscrapers, bridges, and other structures, making them a vital part of the construction industry. There are different types of cranes, including tower cranes, mobile cranes, and gantry cranes, each designed for specific tasks. Some cranes can even be seen on ships, helping to load and unload cargo. Their ability to lift heavy loads safely and efficiently makes cranes indispensable in many fields.