A proscenium is a type of stage design commonly used in theaters. It features a large arch, known as the proscenium arch, that frames the stage and separates it from the audience. This design allows for a clear view of the performance, creating a "picture frame" effect that enhances the visual experience. The proscenium stage typically has a raised platform, which helps to elevate the action and makes it more visible to the audience. This setup is often used in traditional plays, musicals, and operas, providing a structured environment for storytelling and performance, similar to the works of William Shakespeare and Broadway productions.