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.
Captaincy of São Vicente
In 1534 King John III of Portugal granted the Captaincy to Martim Afonso de Sousa, a Portuguese admiral. Sousa had founded the first two permanent Portuguese settlements in Brazil in 1532: São Vicente (near the present port of Santos) and Piratininga (later to become São Paulo).