Frank Lloyd Wright built four textile-block houses, all in Southern California and it's rare that two are on the market at the same time. Mysteriously, they aren't selling, so the prices are coming down. These houses, influenced by Mayan architecture, aren't exactly cozy. They're often compared to temples. But Ennis House, with views of LA from the Hollywood Hills and La Miniatura in Pasadena are the kind of assets craved by the super-rich all over the world. Anthea Hartig is director of the western office of the National Trust for Historic Preservation.