Dome

Close view of the sign; "McDonald's #1 Store Museum is a recreation of the first McDonald's Restaurant opened in Des Plaines, Illinois by McDonald's Corporation founder, Ray Kroc, on April 15, 1955. The Museum Facility: The original red and white tiled restaurant building featuring the Golden Arches underwent several remodels through the years and was finally torn down in 1984. The present facility was built according to the original blueprints with some modifications to accommodate Museum visitors and staff. The "Speedee" road sign is original." Source: http://www.mcdonalds.com/corp/about/museum_info.html