Dome

Context view, looking southwest, showing view of downtown Phoenix in the distance; "In architectural history the Norman Lykes House is the very last design credited to Frank Lloyd Wright. Wright died in 1959, leaving behind a profusion of signed work, unfinished and unsigned work, reusable elements, partially approved work of students, tantalizing suggestions, dusty archives, rejected projects. The Lykes House was finished in 1967, finished off by Taliesin architect John Rattenbury for the original client on the original site, so it counts as the last official FLW house. In exterior form the Lykes House is interesting because it's a "desert rose" circular concrete-block castle mounted onto and into the hillside. Its 2800-square-foot interior floor-plan based on five or six intersecting circles and cylinders, bigger and smaller, geometrically intersecting each others' centers (not visibly), with all the built-in furniture and fixtures built into the same curves and forming concentric circles. The original design included five bedrooms trailing off to the south, like a tail, some of them unworkably tiny. In 1993 Rattenbury renovated them down to three more spacious bedrooms." Source: http://www.waltlockley.com/lykes/lykes.htm