Gaudi in south Osaka? Well, why not... I think I recall somebody telling me that this was an observation tower, but I don't recall the details. But given the popularity of Gaudi's work in Japan, it's not surprising that somebody decided (obviously) to put a tribute to him somewhere.
Unlike the previous paddy photo, this was on a quiet local road rather than a busy highway, and looks more like the middle of nowhere in Okayama instead of a couple hours by bicycle from downtown Osaka.