Now it's too easy, if you turn on the Wikipedia feature of Google Maps, or even if you just turn on the photos feature. But the thing in question has in fact now been built -- and photographed -- about 800 feet from where I thought (not bad for the middle of the desert). You might be able to figure it out from just the pictures.
Comments screened. ETA: comments here are so far general comments; puzzle solutions are (or will be, when I unscreen them) in the original post.