Photograph showing shell wall of Foundry Apse at Cosanti in Paradise Valley, Arizona

Two photographs of Foundry Apse at Cosanti in Paradise Valley, Arizona

Photograph of amphitheater designed by Paolo Soleri at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico, showing architectural details

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico, showing architectural details

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico, showing wall

Photograph of amphitheater, designed by Paolo Soleri, at the Santa Fe Indian School (previously named the Institute of American Indian Arts) in Santa Fe, New Mexico, showing architectural details