The tower contains three floors with circular floor plans on top of four shafts of poured-in-place concrete. A central cylindrical shaft houses both stairs and mechanical equipment. Three rectangular shafts, featuring elevators, rise parallel to the central shaft. Each shaft's outfacing wall is made up of glass panels, providing tourists views of the city during the 68-second elevator ride to the top. Before renovations in 2008, the first level housed the observation deck, the second a revolving restaurant called "Antares", and the third level a club called "The Dome". The top three floors are encased in an open-air sphere, which is a geodesic dome formed with aluminum struts. Every one of the struts' 260 intersections is covered by aluminum circles with lights in the center.