The elliptical circle was turned to a memorial to Quezon. The 400 hectares of the Diliman quadrangle was allocated by the commission as the city's central park. This central park was to contain the national botanic garden, the national zoo, athletic grounds, a grand stadium and even a golf course. The park was to be the main component of a comprehensive citywide park and parkway system. This system would have included another 80-hectare park in the north, various parks and greenbelts along creeks and rivers, numerous playgrounds and athletic fields. A 46-hectare area (currently occupied by SM City North EDSA) was proposed to be the location of the National Exposition Grounds which was originally intended to host the 1946 World's fair, adjacent to it is the proposed Scientific Government Center. The transfer of the main campus of the University of the Philippines was also part of the master plan, as well as the planning of housing projects and business and industrial hubs. Finally, there was to be a major greenbelt all along the Marikina and San Mateo valley – to contain urban sprawl, preserve the agricultural land and protect the city’s watershed areas. None of the intended parks and parkway system was ever built.