It is one of the main attractions of the town. It is a hot spring with a flow rate of 6,000 litres per minute, which allows the river Mijares to recover part of the decline that it suffers upstream for the diversion to the course to the Cirat dam.
Its water was declared public utility by the Royal Order of October 13, 1863. For its constant temperature of 25 ° C, the water has hypothermal effects and makes bathing pleasant throughout the year. It also has hydro geochemical and biological properties beneficial to health.
By chemical composition (700 mg / l magnesium sulphate-mixed bicarbonate) it is considered medium trace mineralization.
Physiographic of the channel in this area has allowed the formation of natural pools that are an excellent rest area, which is also equipped with picnic areas and playgrounds.
According to legend, the Moorish king Zeit-Abu-Zeit had built a bathhouse for women of his harem to be maintained always beautiful and young.