Estadio Olímpico Universitario is a multi-purpose stadium located inside Ciudad Universitaria in Mexico City. It was built in 1952 and at that time was the largest stadium in Mexico. This stadium has a capacity of 72,000. The first major event held in the stadium was the 1955 Pan American Games. During the 1950s and the 1960s this stadium was used mostly for college American football matches between the largest Mexican public universities at the time: UNAM and IPN. From the late 1950s it was used for football matches, some American football matches and athletics. American architect Frank Lloyd Wright called it "the most important building in the modern America".
The Olímpico Universitario hosted the 1968 Summer Olympics; for the event the seating capacity was increased from 70,000 to 83,700 spectators to cover the IOC requirements for an Olympic stadium. It was the location of the track and field competitions, equestrian events, certain association football matches, the arrival of the marathon and the opening and closing ceremonies.