A retractable roof is a type of roof that can be opened or closed, allowing for flexibility in how a space is used. These roofs are commonly found in sports stadiums, concert halls, and other large venues, enabling them to adapt to different weather conditions. When closed, they provide protection from rain and sun; when open, they allow for fresh air and natural light. Retractable roofs are typically made from materials like steel, glass, or fabric, and they can be operated manually or automatically. The design often includes tracks and motors that facilitate smooth movement, making it easy to transition between indoor and outdoor environments.