A factory is a building where workers and machines make products in large quantities. Instead of one person crafting something from start to finish, a factory divides the work into steps, with different people or machines handling each part. One worker might cut metal, another might assemble pieces, and another might paint the finished product.

Factories changed the world. Before factories existed, most goods were made by hand in small workshops, making them expensive and slow to produce. The first factories appeared in England in the late 1700s, using water wheels and later steam engines to power spinning and weaving machines. This Industrial Revolution meant ordinary people could afford things like clothing, tools, and furniture that once only the wealthy could buy.

Modern factories produce everything from cars to computers to candy bars. They use assembly lines, conveyor belts, and increasingly, robots to make products faster and more consistently than humans working alone can. A car factory might produce hundreds of vehicles every day, with each one containing thousands of parts that must fit together perfectly.

When you visit a factory on a tour, you're watching the organized process of turning raw materials into finished products that will end up in stores, homes, and schools around the world.