Throughout the entire lobby, the 24-foot-tall ceiling is made of black cement and gray glass mosaic tiles. Recessed within the lobby ceiling are lights with dimmers. The floors, walls, and columns are also clad with travertine. The exterior walls of the lobby contain bronze mullions within which the exterior glass panes are set. A horizontal bronze bar, about above the floor level, surrounds the exterior walls. The horizontal bronze bar was installed in the 1970s per New York state building regulations. Signs in the lobby were originally designed in a square serif font custom-made for the Seagram Building.