Sixty-five miles north of Phoenix on I-17 (near the exit for Cordes Junction, AZ-69), Arcosanti is the brainchild of Italian architect Paolo Soleri. Begun in 1970 and still very much in progress, it aims to be a self-sustaining habitat resulting from the synthesis of architecture and ecology. You can take a tour, grab a bite at the small café (where everything is homemade), and shop for one of the famous hand-cast bronze wind-bells made at the site.
Situated on six hundred acres of Sonoran Desert, just outside Scottsdale, is Taliesin West, Frank Lloyd Wright’s winter home. Designed 1937-1959, it uses organic architecture to integrate the buildings with the land and has been called "an experience in color, light, and time".