Castilla Termal Solares Spa, situated in a vast park of centenarian trees, is a historical and emblematic building that was declared the first thermal station of Cantabria at the beginning of the 20th century. Preserving its classical architectural style, the building hosts the spa hotel complex of 4 stars status, where they have 113 rooms fully equipped, 5 of them are junior suites and 7 are high quality double rooms. Moreover, the Solares hotel spa provides a wide range catering services, a lobby bar, a summer terrace and the magnificent “El Manantial” restaurant. The spa features a pool of more than 85,000 liters of thermal water flowing directly from the Fuencaliente spring, totally equipped with the latest innovations on thermal technologies (swan neck jets, beds, bubble baths, a lane for swimming against the current, etc…). In addition, it has summer outdoor pool, a children area and a complete range of spa services to ensure all your requirements related to relaxation.