general appearance, adding several rows of minimalist, slab–shaped brick buildings to the southern half, the largest of these being the UCLA Medical Center. Architects such as A. Quincy Jones, William Pereira, and Paul Williams designed many subsequent structures on the campus during the mid-20th century. More recent additions include buildings designed by architects I.M. Pei, Venturi, Scott Brown and Associates, Richard Meier, Cesar Pelli, and Rafael Vinoly. To accommodate UCLA's rapidly growing student population, multiple construction and renovation projects are in progress, including expansions of the life sciences and engineering research complexes. This continuous construction gives UCLA the nickname "Under Construction Like Always".