Dome

Upper right portion of west elevation, ornamental reliefs; The Jewelers' Building is the only example of the early work of Dankmar Adler and Louis Sullivan that survives in the in the Loop community area of Chicago in Cook County, Illinois, United States. The building is a common loft in construction and plan, but its facade departs dramatically from others of its type. An open exterior, using cast iron mullions rather than masonry piers in the central bay, and Sullivan's stylized floral ornament provide distinction. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 7/16/2010)