The construction site at the corner of Ellis Avenue and 55th Street was transformed over the summer from the first stages of a foundation for the Ratner Athletics Center to a building that is now taking on the shape of Cesar Pellis architectural vision. The swooping roofline of Pellis design is clearly visible now, as workers continue to build the new facility, which is scheduled to be completed by fall 2003. The most recent addition to the building was the erection of the roof masts that rise 85 feet from the ground. The roof is held up by tensioning cables, which will be tuned to the designated tension. While the design does not repeat Gothic architectural forms, Pelli has described the buildings design as one that recaptures the spirit of the original creators of Gothic architecture.