Abstract: In one preferred embodiment, the present invention includes a self-standing public restroom facility requiring only sewer and water at the installation site. The facility is a functional, low-cost, easy-to-maintain, low-power-consumer, safe, accessible public restroom facility available to all citizens of a modern society, whether such citizens be tourists, business-persons, transients, home-less, able-bodied or physically challenged. The facility comprises a plurality of wall panels that bolt to a slab and to each other to enable rapid, low cost, off-site, modular construction and easy assembly on-site.