Close enough, literally.
I did, afterall, ask where, and, not what is it.
It's the
Stanley R. Mickelsen Safeguard Complex, almost literally across the street from Nekoma, ND. 1.07 miles, to be GooglEarth precise.
I shoulda used it as a What Is This, instead.
Good on ya, Sexo.
How'd you find it, if I may ask?