The University of Santo Tomas, established in 1611, has the oldest extant university charter in Asia.Since the Spanish colonial period, Manila has been the center of education. The University of Santo Tomas (1611), Colegio de San Juan de Letran (1620) and Ateneo de Manila University (1859) are some of the oldest educational institutions that was established during the colonial period. The University of the Philippines, along with seven other State Universities and Colleges (SUC), namely the Eulogio "Amang" Rodriguez Institute of Science and Technology, Marikina Polytechnic College, Philippine Normal University, Philippine State College of Aeronautics, Polytechnic University of the Philippines, Rizal Technological University and the Technological University of the Philippines, are based in Metro Manila. Manila's University Belt form the largest concentration of higher education institutes in the Philippines, making Manila the center for higher learning in the country. The country's top ranked universities, located in Metro Manila, are widely known to be as follows, University of the Philippines, Ateneo de Manila University, De La Salle University, and University of Santo Tomas.