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.
São Bernardo do Campo
The city was founded by João Ramalho in 1553 and was known as Vila de Santo André da Borda do Campo de Piratininga, soon transferred to another nearby place, safer from hostile tribes. It is, however, historically perceived as the first Brazilian settlement built away from the sea. The original settlement was then resettled as São Bernardo, became a parish in 1812 and became a municipality in 1890. In 1938, it became a part of the Santo André district only to be separated again in 1945, as the aftermath of an action from a group of entrepreneurs led by Wallace Cochrane Simonsen, who was eventually appointed as the first mayor of the newborn municipality.