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.
Caldas Novas
In 1777 Martinho Coelho and Gustavo- Mauricio Silva De Carvalho Alves discovered the hot water springs that became known as Caldas de Piratinga, later changing the name to Caldas, on the banks of the Caldas River. The discover registered the land and established a ranch on the left bank of the river, which he named "Fazenda das Caldas". Gold was found in small quantities attracting prospectors and others in search of cures in the hot waters. In 1850 another settlement arose on the right bank of the river near the hot springs, where a church was soon built. In 1857 Caldas Novas became a district and in 1911 it became a municipality.