When I first looked at these UPI-2M Biooctanic buildings, I thought aliens had landed and were overtaking human societies. Perhaps I have watched too many 'Star Trek' episodes growing up (and later 'Battlestar Galactica'), but seriously, these cyborg structures are very off-putting to look at.
Yet, it appears that the UPI-2M Biooctanic buildings are actually for the betterment of our species (not, as I first imagined, to the conquering of them). According to DesignBoom.com, the Croatian architecture firm designed these superstructures to produce biofuel and city air recuperation. Visit DesignBoom.com for more info and images.