Helen Broyer, art history major from Stanford, at work in the sun at the campsite in Arcosanti where workers and staff on the Arcosanti project are housed, June 22, 1971. Helen is one of the students taking part in 6-week construction workshops to build Arcosanti, a city of the future taking shape in Arizona, north of Phoenix. Designer is Paolo Soleri, the Italian-born architect whose concepts for future urban living have inspired an entire generation of young optimists. (AP Photo/Susan Levy)