Thermal springs

Iran's hot springs, from Larijan Hot Spring at the base od Damavand to Sarein in Sabalan and Geno hot springs in Bandar Abbas, except using as an amusement, have many healing properties and are popular among tourists.
Due to the high percentage of mineral substances, hot springs are effective in treating various diseases such as skin diseases, muscle aches, nerve relief, regulating blood pressure, improving kidney pain, etc... therfore, play a  vital role in the tourism industry in Iran.