Stage design is the art of creating the physical environment where a performance takes place. It involves planning and constructing sets, props, and backdrops that enhance the storytelling of a play, musical, or other live events. Designers consider factors like space, lighting, and audience perspective to create an immersive experience. The process often includes collaboration with directors, lighting designers, and costume designers to ensure a cohesive vision. Tools like sketches and 3D models help visualize the final product. Effective stage design can significantly impact the mood and atmosphere of a performance, making it a crucial element in theater production.