When Uber acquired the floor of the building it occupies in San Fancisco, an initial concern was its distance from the company’s executive offices on the fourth floor. Studio O + A deliberated over how people on the floor could feel any
showers This link provides photos to many other outdoor shower designs/ concepts. I love outdoor showers, because they suit living in the tropics. They give a sense of being 'spoilt', so definately add to your backyard retreat.