Intended as a test site for Soleri's urban development theories, the self-contained Arcosanti was designed to house 5,000 people. Though almost five decades have passed since the laying of the foundation stone, the city is still in its early construction stages. Lack of funding has kept Arcosanti small -- it is now home to between 50 and 150 inhabitants, depending on the season.
Over the years, thousands of volunteers have helped construct apartments, storefronts, an outdoor amphitheater, and a visitors center, all rendered in concrete with lots of arcs and semicircles. Landscaping workshops and internships are still available for people who want to be part of the urban experiment. Work at Arcosanti is funded by sales of bronze and ceramic wind chimes.
The buildings are a little rundown and shabby; Soleri passed away in 2013, so they'll likely stay that way. But Arcosanti is a fascinating look at one man's ambitious alternative to urban sprawl.