Interior photograph of the Octagon, a community building at Construction Camp, Arcosanti

Interior photograph showing the ceiling of the Octagon, a community building at Construction Camp, Arcosanti

Photograph showing interior view of Barrel Vault at Cosanti in Paradise Valley, Arizona

Photograph showing exterior view of Barrel Vault at Cosanti in Paradise Valley, Arizona

Photograph of unidentified people at Cosanti in Paradise Valley, Arizona

Model of Maryland Two Suns Arcology design by Paolo Soleri

Photograph of Paolo Soleri looking at architectural drawings

Interior photograph of Gallery/North Studio at Cosanti in Paradise Valley, Arizona showing skylight and ceiling structure

Photograph of Paolo Soleri looking at architectural drawings

Photograph of Paolo Soleri looking at architectural drawings