Pan American Games Aires in 1940, the participants decided that the first games should be held in Buenos Aires in 1942. The plans had to be postponed because of World War II. A second Pan American Sports Congress held in London during the 1948 Summer Olympics reconfirmed Buenos Aires as the choice of host city for the inaugural games, which were held in 1951. The games offered 18 sports. Countries that were part of the Commonwealth of Nations such as Canada did not compete at the first Pan American Games. The second games were held in Mexico City, Mexico. Competitions started on March
Landmarks in Buenos Aires sits at the eastern end of the Plaza de Mayo, a large square which since the 1580 foundation of Buenos Aires has been surrounded by many of the most important political institutions of the city and of Argentina. The site, originally at the waterline of the Río de la Plata, was first occupied by the "Fort of Juan Baltazar of Austria," a structure built on the orders of the founder of Buenos Aires, Captain Juan de Garay, in 1594. Its 1713 replacement by a masonry structure (the "Castle of San Miguel") complete with turrets made the spot the effective nerve