Plan of Babel Canyon Arcology city structure design by Paolo Soleri, from 1970 exhibit at Corcoran Gallery of Art, Washington, DC

Photograph of Paolo Soleri looking at architectural drawings in the Drafting Studio at Cosanti in Paradise Valley, Arizona

Photograph of Paolo Soleri looking at architectural drawings in the Drafting Studio at Cosanti in Paradise Valley, Arizona

Drawing of Arcosanti Arcology design by Paolo Soleri

Drawing of Arcosanti Arcology design by Paolo Soleri

Photograph showing architectural drawings in a building at Arcosanti

Photograph of Paolo Soleri looking at an architectural drawing

Photograph of Paolo Soleri looking at an architectural drawing

Photograph of Paolo Soleri looking at an architectural drawing

Photograph of Paolo Soleri looking at architectural drawings