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.
Santa Bárbara d'Oeste
Margaret Grace Martins, widow of sergeant major Francisco de Paula Martins, bought one of those allotments, measuring two leagues square, whose boundaries were the Piracicaba river to the north and by Quilombo Creek to the northeast. On the site, she founded a sugar plantation, putting her son, Captain Manoel Francisco Grace Martins, in charge of administering the property. In 1818, she initiated the formation of a settlement and the construction of a chapel, dedicated to Saint Barbara. Martins donated the lands the city would develop on, making the town the first and only Brazilian city founded by a woman. The chapel was dedicated on 4 December 1818, now considered to be the date of the town's founding.