The Akron Plan was a type of design commonly used for American Protestant Sunday School rooms in the late 19th and early 20th centuries. In the most elaborate examples, two or more stories of three-sided compartments form a horseshoe around a central rotunda, while simpler examples take the form of a large rectangular room with an interior balcony at each end. The system was copied in England, including at the Union Chapel, Islington and the Tabernacle in Shoreditch.