This U-shaped building, standing at in height, fronts Chicago's Michigan Avenue and Grant Park. The pyramid at the top of the building (which Schulze & Harrington, authors of "Chicago's Famous Buildings", compare with the Tomb of Mausolus at Halicarnassus), with its new zinc-coated stainless steel sheathing, is peaked by a glass "beehive" ornament containing a blue glass box filled with six 1000-watt lightbulbs which emits a deep blue light, a prominent feature of Chicago's nighttime skyline. The beehive is supported by four limestone bisons. Because of this ornament, the building is sometimes referred to as the "Beehive Building."