In 1970, the Cosanti Foundation began building Arcosanti, an experimental town in the high desert of Arizona, 70 miles north of metropolitan Phoenix. When complete, Arcosanti will house 5000 people, demonstrating ways to improve urban conditions and lessen our destructive impact on the earth. Its large, compact structures and large-scale solar greenhouses will occupy only 25 acres of a 4060 acre land preserve, keeping the natural countryside in close proximity to urban dwellers.Arcosanti is designed according to the concept of arcology(architecture + ecology), developed by Italian architect Paolo Soleri. In an arcology, the built and the living interact as organs would in a highly evolved being. This means many systems work together, with efficient circulation of people and resources, multi-use buildings, and solar orientation for lighting, heating and cooling.In this complex, creative environment, apartments, businesses, production, technology, open space, studios, and educational and cultural events are all accessible, while privacy is paramount in the overall design. Greenhouses provide gardening space for public and private use, and act as solar collectors for winter heat.Arcosanti is an educational process. The four-week workshop program teaches building techniques and arcological philosophy, while continuing the city's construction. Volunteers and students come from around the world. Many are design students, and some receive university credit for the workshop. But a design or architecture background is not necessary. People of many varied interests and backgrounds are all contributing their valuable time and skills to the project. Week-long silt sculpture workshops and Elderhostel programs offer other ways to be involved. At the present stage of construction, Arcosanti consists of various mixed-use buildings and public spaces constructed by 5000 past Workshop participants.The residents of Arcosanti are workshop alumni, who work on planning, construction, teaching, computer aided drafting, maintenance, cooking, carpentry, metal work, ceramics, gardening and communications. They produce the world-famous Soleri Bells, as well as hosting 50,000 tourists each year in a Gallery, Bakery, and Cafe open every day except Thanksgiving, Christmas, and New Years Day. Guided tours introduce visitors to the philosophy , history, planning and ongoing construction of the site.Concerts and other events in the Colly Soleri Music Center also allow visitors to experience Arcosanti. Shows include dinner, and are often followed by a pictograph light show on the opposite mesa.