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.