Opened on November 8, 1985, the original building consisted of only three floors. Its original structure has evolved through the years. The City Center has a total of 190,000 gross floor area. Its fourth floor has recently been added to keep up with demand. The newly renovated city center has spherical skylights. As the hub of the retail complex, the City Center has various retail establishments, including the mall's main anchors: The SM Store (formerly SM Department Store) and SM Supermarket. It is also the hub of leisure anchors such as SM Foodcourt, an entertainment center, and a newly modernized cineplex that incorporate the country's second IMAX Theater. The main dining establishments of the City Center are situated on the second level where they break through the frontage in a sequence of linear casements which overlook the Sky Garden.