 She is surrounded by the twelve signs of the zodiac.The rotunda, formerly the library reading room when the building was used for its original function, is lined with columns of solid green Connemara marble from Ireland, topped with gold capitals.Roman and Greek philosophers Demosthenes, Euripides, Sophocles, and Augustus Caesar stare down from the rotunda's heights as the four points of knowledge, Law, Philosophy, Medicine, and Theology, mark the four points of the Greek Cross.