A renovated old maintenance barn. The cylindrical structure has a large cistern tank at top to collect rain water which is filtered and used for bathing and waste in the bathroom below. From there the waste water is processed below the bathroom for use in the garden for water and fertilizer. The sky is a picture taken by the astronomer Haken Dahle at the La Silla European Southern Observatory in Chile. For the original source click here. For permission information in Wikimedia Commons click here. Attribution and link is required for it's use.