The hyperboloid structure of the James S. McDonnell Planetarium of the Saint Louis Science Centre in Missouri, built in 1963 and designed by Gyo Obata of Hellmuth, Obata and Kassabaum. A hyperboloid is generated by rotating a hyperbola (one of the conic sections described by Apollonius) around one of its principal axes.
Photo: https://www.tripadvisor.com/Attraction_Review-g44881-d10727262-Reviews-James_S_McDonnell_Planetarium-Saint_Louis_Missouri.html#photos;geo=44881&detail=10727262&aggregationId=101