This congenial graphic architectural history examines the significance of the prefab bathroom in the history of prefabricated technologies in the built environment. The cultural aspects of ritual and sanitary necessities of hygiene have added to complexities in bathroom design, and driven the development of various alternative construction methods, specifically prefabrication. First introduced with Buckminister Fuller's 1936 Dymaxion Bathroom, and subsequently revisited by many architects and designers, the prefab model has expanded to "pod" and "plug-in" concepts on the building- and city-scale.