The first Pan American Games are officially opened in Buenos Aires by Argentine President Juan Perón.

The Pan American Games, known as the Pan Am Games, is a continental multi-sport event in the Americas first held in 1951. It features thousands of athletes participating in competitions to win different summer sports. It is held among athletes from nations of the Americas, every four years, the year before Summer Olympics. It is the second-oldest continental games in the world. The only Winter Pan American Games were held in 1990. In 2021, the Junior Pan American Games was held for the first time specifically for young athletes. The Pan American Sports Organization is the governing body of the Pan American Games movement, whose structure and actions are defined by the Olympic Charter.

Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− global city, according to the GaWC 2024 ranking. The city proper has a population of 3.1 million and its urban area 16.7 million, making it the twentieth largest metropolitan area in the world.

Juan Domingo Perón was an Argentine military officer and statesman who served as the 29th president of Argentina from 1946 to his overthrow in 1955 and again as the 40th president from 1973 to his death in 1974. He is the only Argentine president elected three times and holds the highest percentage of votes in clean elections with universal suffrage. Perón is arguably the most important and controversial Argentine politician of the 20th century and his influence extends to the present day. Perón's ideas, policies and movement are known as Peronism, which continues to be one of the major forces in Argentine politics.

February 25 is the 56th day of the year in the Gregorian calendar; 309 days remain until the end of the year.