Águas de São Pedro
Recognizing the importance of the thermal springs in the region, the São Paulo State Government on 19 June 1940 founded the (Hydromineral and Climatic Spa of Águas de São Pedro). Despite this, the city celebrates its birthday on 25 July, the date in 1940 of the founding of the first major building in the city, the "Grande Hotel" (now "Grande Hotel São Pedro"). The municipality of Águas de São Pedro was incorporated by State Law No.233, of 24 December 1948.
San Pedro, Buenos Aires
The historic Battle of Vuelta de Obligado took place on the town's Paraná River shores on November 20, 1845. The city is home to a sizable Italian Argentine community, who established the local "Sociedad Italiana de Unión y Benevolencia", a charitable organization, in 1873. San Pedro was officially designated as a city by the Provincial Legislature on July 25, 1907. A former Querandí settlement, a vestige of the area's original inhabitants, was unearthed nearby by archaeologists in 1965. The nation's largest newsprint maker, Papel Prensa, established its principal facility in San Pedro in 1978.