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Points of Interest

The Domes

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South Thorton Road, Casa Grande, Arizona 85193 USA (602) 444-8000

  • Photo Op
  • Folk Art
  • Abandoned Place
  • Offbeat Attraction
  • Roadside Attraction

Tip: review this place & help build a better community!

November 19, 2013 Top Review!

These are pretty cool but don't use the address on here in google maps to find them, it'll take you to a crazy back-road that is really just a trail. Use the coordinates or 'directions' link in the road tripper's app. It's pretty close to the 8 and can actually be seen from the highway.

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This place is on private property. Listing for informational purposes only. Please do not visit without express permission from the land owner.

CASA GRANDE - A little over 27 years ago, ground was broken for an electronics assembly plant on Thornton Road near Interstate 8, at a site now referred as "the Domes." About 75 people attended the event that included a preview of a Thermoshell dome, champagne and a buffet lunch. A total of four dome-like structures were built. One of them looks like a classic flying saucer.

"I am happy but I am scared," Patricia Zebb, owner of InnerConn Technology Inc., told the gathering in July 1982. "There is still a lot of work to do. I'll be glad when I see the first board come off the plating line." That circuit board never was produced. Zebb planned to move her company from Mountain View, Calif., to the new Casa Grande site, which was to become the company headquarters. Her site in California would become a branch plant, according to her plans.

An office was used for a while in one of the domes but the plant never opened. Long abandoned, the site was acquired by new owners in 2006.
The 5-acre plot is about half a mile from Interstate 8. At one point the Domes property was fenced but that has fallen into disrepair with vandalism.

Today Realtor Elizabeth Drew has the listing for the Domes. The asking price for the 5 acres and the four structures with more than 20,300 square feet is $750,000. The Domes are owned by Daniel and Karon Peer of Casa Grande. They operate Simplicity Communications Inc.Today the ceilings of several domes are falling in and could be dangerous, according to Karon. She said vandals and trespassers have caused problems. Even the "no trespassing" signs are covered with spray paint.
"We would like to sell it. We do not want anyone on the property and trespassing charges will be filed," Peer said.

The owners erected a fence and put a cable across the entrance, both of which have been heavily damaged, she said.In one incident, Peer heard that a woman parked at the Domes and let her kids crawl through the fence while she sat in a car. Peer does not want anyone to get hurt on the property.Last year the owners stored a pickup truck and a car in one of the buildings. Windows were broken out on both vehicles. The following week both vehicles and other items were stolen. The loss was about $3,000 plus the vehicles, Peer said.

The Domes had been an illegal dump site for years, Peer said. They did what the county wanted and they were not fined."It has not been a pleasant experience owning the Domes," she added."People are not authorized to be there. We own it and people should ask permission, and my husband is willing to consider requests," Peer said.For example, a couple of gatherings of a local church were held there in the spring. There was a barbecue and "it worked out really nice," she said.
Back in 1982, InnerConn wanted to make circuit boards used in all types of equipment ranging from quartz watches to large computers, Zebb said.

The original site had 135 acres and the plant would have used 10 acres.The shells or domes were constructed by pouring three inches of polyurethane followed by three inches of concrete against a balloon inside, held up by a steel skeleton.
At the time each dome cost about $150,000 and construction took about six weeks for each. The domes were constructed for insulation efficiency and lower costs and construction time.InnerConn Technologies defaulted on a loan from Union Bank of California in 1983. The bank became owner of the InnerConn property in California and later the harmful chemical trichloroethylene was discovered in groundwater beneath that site. A cleanup started in 1989.

Over the years tales of space invaders and ghosts attracted people from across the United States. The Domes is mentioned on many Web sites. In addition, it became a favorite hang-out and party site for young people.In 1982, the area around the Domes was pretty remote. Now there are signs of growth such as the nearby Wal-Mart Distribution Center, about two miles away.In the last three years the Pinal County Sheriff's Office lists a total of 18 calls for service by deputies to the Domes ranging from abandoned cars to trespassing to criminal damage.

These days, the domes are the alleged site of Satanic rituals by mysterious cloaked groups, violent hauntings by the beings they summoned, and the occasional rager. Visit at your own risk!

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DonnaMichelleStensland in reply to Official Description on August 23, 2016

I plan on taking trip to see my mom in National City CA at her rest home then head over to domes can I please have the contact info to owners to get authorization to the property, my name is Donna Stensland phone is 209-769-2306 or email me at donnashousekeeping@yahoo.com even text if its more convenient please. I am the owner of Donnas Housekeeping Plus windows and Hauling Service out of Sonora CA , I never get to vacation or leave CA , I need to see my sick mother and my dream is to see Arizona for the first time . I work hard and never get breaks. It would be amazing for me to get permission to visit a site in Arizona any site I wont be picky.

February 14, 2016

32°48'45"N 111°46'24"W <----- Here is the location

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Rated 3.0 February 25, 2015

Cool place for a photographer, but it definitely has a creepy vibe. Don't trust your GPS

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May 29, 2014

Tried to get here the other day, I didnt see the comments below, I missed the turn at Battagla Dr and it directed us down an unmaintained dirt road with deep ruts, even dry it was really tough in my truck, so we turned around and decided to go back another day.

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March 9, 2014

The route that worked best for my sister and me: Take I-8 to exit 172 (Thornton Rd). Go South on Thornton to road to The Domes.

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April 6, 2016

My typos thanks to auto correct has me rewriting this ...first of all..no ghosts just morons hanging out there breaking and vandalizing the place..also due to hype and a seize the opportunity from gullable minds if ur really interested in this do not trespass property ..be ready to pay $300 buck and they'll let u see it...yes $300 american dollars not peso's amigos ..to see trash and graphitti and stupid made up stories. Love gullable people..if only I owned such real estate I'd do the same thing..charge the fool for a walk around of concrete and make believe my life's been a nightmare by hauntings..as I hold out my hand for 300 bucks..works every time kudos to the owners for their business skills

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KerinAnnGordon in reply to on May 5, 2016

I totally agree with you. A few years I came upon this place when I moved here...walked around a bit wondered about what it was and left. Poor owners..what a mess. Smells like urine and looks like crap. They need to tear it down and sell it. Just a few ago I vaguely remember something in the local paper about it. Also if you are looking for ghosts and fall for that BS in Tombstone and take the ghost walk ar night..try this..throw dust up in the air and take a pic..it will be full of orbs..Tombstone is a sad tourist trap..take it for what it is.

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