sentences:  The distinctive cylindrical building, wider at the top than the bottom, with a spiral ramp climbing gently from ground level to the skylight at the top, turned out to be Wright's last major work, as the architect died six months before its opening.The building opened in October 1959 to large crowds and instantly polarized architecture critics, though today it is widely praised.Some of the criticism focused on the idea that the building overshadows the artworks displayed inside, and that it is difficult to properly hang paintings in the shallow, windowless, concave exhibition niches that surround the central spiral.