Nestled in the heart of the picturesque municipality of Solares, just minutes from Santander and the stunning beaches of Cantabria, Castilla Termal Solares is a 4-star hotel housed in a beautifully restored 19th-century Belle Époque building. This historic retreat combines timeless elegance with modern luxury, offering 113 exquisitely decorated rooms that blend period charm with contemporary comfort. Each room features large windows and a private balcony or terrace, overlooking lush gardens filled with centuries-old trees—creating a serene and stately atmosphere reminiscent of another era.

Castilla Termal Solares is renowned for its exceptional wellness offerings, centered around the mineral-medicinal waters of the historic Fuencaliente Spring. These healing waters, declared of public utility in 1828, are rich in bicarbonate, chloride, calcium, and sodium, and are therapeutically indicated for a wide range of health conditions. Guests can enjoy the benefits of these waters in the innovative wellness center, which features an expansive 849-meter indoor thermal pool equipped with hydromassage beds, wall jets, swan necks, and a counter-current swimming river. The Balnea Romana contrast circuit provides a complete sensory experience, promoting relaxation, circulation, and overall well-being.

Dining at Castilla Termal Solares is a journey in itself. “El Bosque” (The Forest), an elegant glass-enclosed restaurant surrounded by natural beauty, offers a culinary fusion of tradition and innovation. “El Manantial” specializes in creative market-fresh cuisine and seasonal dishes inspired by the rich culinary heritage of Cantabria, featuring fresh wild fish and grilled meats. For a more casual option, Gastrobar Solares presents a menu of light, high-quality dishes and cocktails, served with views of the park and gardens.

During the summer months, guests can unwind on two unique outdoor terraces. One, located next to the hotel with views of the pool, offers a refined setting for drinks. The other is nestled deep within the Solares Forest—a magical spot to savor grilled specialties and bar fare surrounded by nature.

At Castilla Termal Solares, every detail is designed to offer a complete sensory and wellness experience. Whether you're immersing yourself in therapeutic waters, indulging in gourmet cuisine, or simply strolling through the estate’s stately gardens, this historic haven offers a perfect blend of heritage, relaxation, and rejuvenation.