The Weird Abandoned Domes of Casa Grande, Arizona

the-domes-casa-grande-arizona (Image: Classic Film, cc-nc-4.0)

There’s a small city in Arizona where lies the Casa Grande Ruins National Monument, a group of Anasazi dwellings dating back centuries. But as compelling as these structures are, an even more mysterious collection of modern ruins endure on the southern outskirts of the desert town. Some have likened the eerie abandoned buildings, known as ‘the Domes’, to flying saucer-like UFO houses, retro-futuristic ruins inspired by post-war science fiction shows.


the-domes-casa-grande-arizona-4 (Images: Classic Film, cc-nc-4.0)

As Weird US reports: “In almost every small town in America, there seems to be at least one place like The Domes of Casa Grande, Arizona. It’s the kind of place that has no real past, and not much of a future. It’s the kind of place where teenagers go to drink beer, start fires, and practice their graffiti skills. It’s where the locals go to dump trash illegally. It’s the kind of place your mother may have told you to avoid.”


the-domes-casa-grande-arizona-3 (Images: Classic Film, cc-nc-4.0)

Tucked away in a neighbourhood near South Thornton Road, the Domes are understood to have been in the 1970s or 1980s for computer manufacturing, but were never completed. Such a background fits with Weird US’ report that the abandoned, unfinished foundations of other planned structures can be found dotted around the derelict buildings.

the-domes-casa-grande-arizona-6 (Image: monsta’s ink, cc-nd-4.0)

According to Atlas Obscura, the structures vary in size and shape. One resembles a flying saucer while others form the shape of a giant caterpillar. Locals talk of witchcraft and devil worship taking place within the Domes of Casa Grande, and warn would-be urban explorers to stay away, especially from the abandoned tunnels to the east of the site.


the-domes-casa-grande-arizona-8 (Images: monsta’s ink, cc-nd-4.0)

Inside, the Domes are covered in graffiti and blackened by smoke. At least one of the derelict concrete shells was so full of old junk that accessing it proved difficult, writes Weird US. Others, meanwhile, were completely empty, seemingly cleared of debris, their hulking interiors surprisingly large and easily able to accommodate several cars.

the-domes-casa-grande-arizona-9 (Image: monsta’s ink, cc-nd-4.0)

What the future holds for the mysterious Domes of Casa Grande remains to be seen. Their sinister reputation is also cause for debate. Many spooky happenings that have been reported there are likely attributable to vandals, underage drinkers or merely the wind. But does that account for everything? And do the tales of demonic conjuring go beyond urban legend?

the-domes-casa-grande-arizona-10 (Image: monsta’s ink, cc-nd-4.0)

You be the judge, but as Weird US concluded: “…once the sun disappeared, the whole scene grew absolutely unsettling. I was there long enough before dusk to determine there was no one else around, but in the dark, the noises I heard were no longer just my own. No one could have arrived at this isolated location without my seeing them drive up in a car, yet there was something definitely moving around me and it didn’t sound like a small desert creature.”

Related – The Retro-Futuristic Ruins of Wanli’s Abandoned ‘UFO Houses’



  • hikerguy

    There was a show on the SYFY network here in the states called Haunted Highways. One of the teams visited this site and found evidence of people living there, which could explain some of the noises they heard. Creepy place none the less.

  • Marianne Fossum Lewis

    More than likely, these were built by the Monolithic Dome Company of Midlothian, TX. Located along I-35 between Dallas & Waco, there is a small village of these structures. The most prominent is a line of connected domes resembling a caterpillar & painted with many pairs of caterpillar legs wearing cowboy boots. It’s quite the sight!
    I believe these were “the house of the future” in the 70’s & 80’s.

  • JustMe

    Great find, Marianne! Really looks like they built the domes.
    However, I still do not understand why someone would build an electronics factory just in the middle of nowhere in the 70s or 80s, miles away from anything…

  • Spencer Quigley

    So we stumbled across this article in a weird things of AZ book. And decided we had to see it with our own eyes. So we piled into my 98 nissan frontier, picked up some friends along the way and made our way to the Domes. It was an easy find and is not entirely isolated as there are mobile homes scattered around the vicinity. There was a good size geoup of us and since there were so many stories of bad things happening there, we were all armed to the teeth. Upon arriving the first dome we encountered was shaped like a flying saucer. We made our way through the saucer and to the second building which was dome shaped. Heres where it started to get weird. I was the first person in the dome only to find i wasnt alone. A single bat came flapping out of the darkness which startled me pretty good. After that everyone else made their way into the 2nd structure and we had ourselves a look around. Now we had read that you can hear voices whispering in your ears as you walk through the buildings. So we were all listening very intently. But heard nothing. Upon entering the 3rd structure i was struck from behind by one of my party, apparently i had picked up a pretty large spider that was making its way towards my neck. After that we decided to keep going with nothing else happening until i decided to stay behind whilst the group moved onward. The group exited the dome and made their way back towards the vehicle. This is when i started to hear voices, and indeed they sounded as if someone was whispering in my ear. We concluded that it was the sound of my friends as their voices bounced of the empty cement walls. It was nothing but echoes. As i was catching up there was some commotion from my group of friends and they were all ducked down. Someone was by our vehicle we could see bright lights but didnt hear anything. So my buddy and i decided to go check it out leaving the rest of the group behind the dome. Upon squeezing through the barbwire fence we discovered it border patrol. Heres where it gets crazy. The only reason he stopped on this dirt road was because he saw my truck with the doors wide open. Now, we had several females with us and their purses were still in the car untouched. Which is also how we all remember those doors were locked so no one could steal any of our stuff, and yet the doors were clearly wide open. According to the border patrol agent illegals will run whenever they see B.P. coming leaving the doors to whatever vehicle they were in open. So he was waiting on backup to search the surrounding areas for illegal immigrants. We also learned that the cartels and smugglers have killed people at this location and that we should not be there. So take it as you will, its a creepy place for sure and upon my sencond visit came to realize that there are mini tunnels that run under the domes and that these tunnels contain RATTLESNAKES! lots and lots of freaking rattlesnakes. So have fun be safe and be warned.

  • Kim Burch Smith

    Ghost Adventures did an investigation this year March 26th . I’m watching it now and they talk to people that were involved in Satanic rituals in the domes. The authorities say they found dead animals and human remains there.Also The domes are beginning to fall apart and drop giant pieces of cement if you do go there go with caution.


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