Pereira originally envisioned a circular plan with numerous artificial lakes and the university in the center. When the Irvine Company refused to relinquish valuable farmland in the flat central region of the ranch for this plan, the university site was moved to the base of the southern coastal hills. The design that ended up being used was based on the shape of a necklace (with the villages strung along two parallel main streets, which terminate at University of California, Irvine (UCI), the "pendant"). Residential areas are now bordered by two commercial districts, the Irvine Business Complex to the west (part of the South Coast Plaza–John Wayne Airport edge city) and Irvine Spectrum to the east. Traces of the original circular design are still visible in the layout of the UCI campus and the two artificial lakes at the center of Woodbridge, one of the central villages.