In the heart of Spain, nestled in the picturesque valley of the Cidacos River, lies a true natural wonder that is attracting an increasing number of wellness tourism enthusiasts each year. This is the famous pools of Arnedillo, in the province of La Rioja. These are not just open-air thermal baths, but a complex of three natural basins where geothermal streams emerge to the surface, reaching temperatures above fifty degrees. The uniqueness of this place lies in its pristine nature and complete accessibility for everyone. Here, visitors can experience the effect of contrasting treatments by alternating immersion in the hot springs with the refreshing embrace of the cool river water—a sensation comparable to a luxury spa visit, but with one important difference: everything here is absolutely free.
The healing properties of these springs have been known for a long time. Their composition, enriched with sodium chlorides, calcium sulfates, and bromides, as well as minerals such as magnesium, iron, and silicon, turns each pool into a natural health clinic. Immersion in these mineral-rich waters provides relief for muscle and joint ailments, relieves tension, and promotes deep relaxation. Officially, the pools are open from early morning until midnight, but the most memorable experiences can be enjoyed at dawn or under the cover of night, when visitor numbers are minimal and nothing interrupts your connection with nature. For guests’ convenience, there are special areas equipped with showers and places to leave personal belongings.
The surroundings of Arnedillo are equally impressive. This area is part of the prestigious European Natura 2000 network of protected natural zones. Majestic limestone cliffs framing the valley are home to numerous birds of prey. Particularly notable are the colonies of griffon vultures, which nest directly on the ledges and in caves. Watching them soar in the sky adds a sense of wild, untamed adventure to any visit. The specially equipped “Mirador del Buitre” — an observation deck and small visitor center — offers information about these remarkable creatures and a chance to see them in their natural habitat.
In addition to the baths themselves, the tiny village of Arnedillo, with a population of just over 400, offers visitors a journey through the region’s history and geology. Here you’ll find the old parish church of San Servando y San Germán, ancient chapels, and the ruins of medieval castles. Paleontology enthusiasts can follow a route leading to fossilized dinosaur footprints. A short, 600-meter ‘Thermal Water Trail’ runs along the banks of the Cidacos, where information panels explain the history and geological origins of the hot springs. As you walk the path, you’ll see small rock terraces and geological outcrops, providing an understanding of how underground currents circulate and become mineral-rich.
An autumn visit, especially in September, is considered the perfect time for a trip. Mild weather and fewer tourists allow you to fully enjoy the peace and tranquility. This simple and accessible adventure invites you to rediscover the healing power of nature in one of the most authentic corners of northern Spain—a place where time slows down, and both body and soul find long-awaited harmony.
