For an unique natural experience, check out the bubbling pools of Lagoa Quente de Pirapitinga. This spot is known for its mineral-rich waters.
When you've spent a bit of time at this naturally heated water source in Privê das Caldas, why not check out Acqua Park diRoma, Water Park, and Lagoa Thermas Club? They're not very far from Lagoa Quente de Pirapitinga and also a hit with many tourists.