Aigües Termals de Montanejos, also known as the Fuente de los Baños, is a renowned natural thermal spring located in the village of Montanejos, within the province of Castellón in the Valencian Community, Spain. This picturesque destination is celebrated for its crystal-clear waters, which maintain a consistent temperature of approximately 25°C (77°F) throughout the year, offering a refreshing experience for visitors.

Historical Significance
The origins of these thermal springs trace back to the 13th century when the Moorish king Abu-Zayd commissioned the construction of baths for his harem, believing that the mineral-rich waters would preserve their youth and beauty. Remnants of these ancient Arab baths can still be observed in the area today.

Therapeutic Properties
The waters of Montanejos are rich in minerals such as magnesium, calcium, and iron. These elements are believed to offer various health benefits, including improvements in skin conditions and support for digestive and kidney functions. The springs have been recognized for their therapeutic qualities since 1863, when they were declared of public utility by royal decree.

Natural Beauty and Activities
Nestled among limestone cliffs and lush greenery, the thermal pools provide a serene setting for relaxation. Visitors can enjoy swimming in the natural pools formed by the Mijares River, which are replenished by the spring’s flow of approximately 6,000 liters per minute. The area also offers opportunities for hiking, with trails leading to scenic viewpoints and geological formations like the Cueva Negra.

Accessibility
Montanejos is approximately a 90-minute drive from Valencia, making it an ideal destination for a day trip. While public transportation options are limited, several tour operators offer excursions that include transportation, guided tours, and sometimes meals. Alternatively, visitors can reach Montanejos by car, with parking available near the thermal area.

Visiting Tips
Best Time to Visit: While the springs are accessible year-round, the summer months can be particularly busy. Visiting during the shoulder seasons (spring and autumn) may offer a more tranquil experience.

What to Bring: Swimwear, water shoes, sunscreen, and a towel are recommended. The rocky riverbed can be slippery, so appropriate footwear is advisable.

Facilities: The area is equipped with picnic spots and recreational areas, making it suitable for families and groups looking to spend a leisurely day in nature.