This thing fascinated me the first time I saw it at Creaky Pavillion, where it was art for a post on Warmism. No explanation there (which is not meant as a criticism, Tatyana), but there was a link to the Flickr account where it originated. There it was identified as the Zugspitze weather station, atop the Zugspitze, the highest spot in Germany, at a little under ten thousand feet. Looks like a defensive outpost of some kind in the Lord of the Rings, or else a flour sifter turned on its side. Can’t find an explanation for why it looks the way it does, but it certainly is cool. The peak in the distance has a Christian cross atop it, viewable in the image as posted at Flickr.
UPDATE: Tatyana, at Creaky Pavillion, added this link to a larger photo of the station, which isn’t as dramatic looking, but gives a better idea of what it actually looks like. I’d still like to know what’s in there.
THE TEXAS SCRIBBLER 
Why it looks like this? Probably because they got an ambitious architect at the time.
The station is supposed to measure atmospheric something or other, so presumably the design has some meteorological usefulness. Or else it was just some guy pitching the space age. I think it looks like a fantasy army’s fortress.