At the entrance to the library is a 21-meter wide courtyard paved in marble. Nine wide marble steps lead up to a two-story gallery. Curved and triangular pediments are supported by a double-decker layer of paired columns. The center columns have larger capitals and rafters than those on the end. This gives the illusion that the columns are farther apart than they really are. Adding to the illusion, the podium beneath the columns slopes slightly down at the edges.