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Cosanti, an Arizona Historic Site
6433 E. Doubletree Ranch Rd.
Paradise Valley, AZ 85253
Mon-Sat 9AM-5PM & Sun 11AM-5PM
Free Admission

Cosanti is the gallery and studio of Italian-American architect Paolo Soleri and was his residence until his death in 2013. Located in Paradise Valley, Arizona, USA, it is open to the public. Cosanti is marked by terraced landscaping, experimental earth-formed concrete structures, and its sculptural wind-bells.

Soleri is best known for Arcosanti, the prototypical arcological "urban laboratory" founded in 1970 in the high desert, about seventy miles north of Phoenix, Arizona. Its community still is comparatively young. Cosanti is where Soleri and his wife, Colly (née Corolyn Woods) Soleri, had established their residence in 1956, metropolitan Phoenix their city, on a site just a few miles from Taliesin West, where Soleri had studied, an area that has since been surrounded by expensive suburban residences. Cosanti has been designated an Arizona Historic Site.

Paolo Soleri invented the words "Cosanti", "Arcosanti", and "arcology". He coined "arcology" by combining the words "architecture" and "ecology". "Cosanti" fuses two Italian words, "cosa" (meaning "things", "property", "matter", "business") and "anti" ("against"). "Arcosanti" combines "arcology" with "Cosanti".

The structures at Cosanti include the original "Earth House" (which is partially underground), student dormitories, outdoor studios, performance space, swimming pool, gift shop, and Soleri's residence. All are set amidst courtyards, terraces, and garden paths.


Location and orientation of the buildings is significant. Many structures have been placed under ground level and are surrounded by mounds of earth so as to be insulated naturally, year round, for moderation of their interior temperatures. Soleri also designed south-facing apses (partial domes) situated as passive energy collectors, accepting light and heat in the lower winter sun, deflecting it and creating shade in the higher summer sun. The swimming pool and several other structures have southern exposures to maximize the warmth of the winter sun.

The buildings at Cosanti are not intended to be examples of the concept of arcology, but many of the principles of arcology were first put to work there. Most of the structures were built using the earthcasting method or one of Soleri’s variations on that technique. Concrete was poured over pre-shaped earthen molds, the earth excavated after the concrete solidified. A modified earthcasting technique is also used to craft the bronze and ceramic wind-bells produced at Cosanti and at Arcosanti; the dramatic bronze-casting process is conducted weekday mornings at the foundry at Cosanti and also at Arcosanti.

Located in Paradise Valley, Arizona, 1 mile west of Scottsdale Rd. & 1 mile south of Shea Blvd.

Open 7 days a week: Monday- Saturday 9am-5pm, Sunday 11am-5pm.

Closed major holidays. Group tours by reservation.

External links[edit]

Coordinates: 33°34′01″N 111°56′31″W / 33.56683°N 111.94191°W / 33.56683; -111.94191