37 fountains which flow at temperature that fluctuates between 4 and 56 degrees, 24 hectares of facilities and the privileged setting of Vall de Boi are some of the characteristics of the Caldes de Boi Spa.
Caldes de Boí is one of the most important spas in Catalonia due to the amount and diversity of its waters. It has 37 fountains, which flow at temperature that fluctuates between 4 and 56 degrees, with different compositions and therapeutic applications. The baths date back to 1657, though it is believed they were already being used for therapeutic purposed in Roman times. In 1887, the fountains were declared of public use; they were also officially recognised as constituting the richest water complex on the Peninsula. The spa is in an isolated spot in Alt Pirineu (Vall de Boí), far from large population centers, at 4921 feet above sea level. The thermal complex occupies 24 hectares and has numerous thermal and tourist facilities. Noteworthy are the stoves, caves dug out of rock which emit sulphurous water vapour from the subsoil and function as natural saunas.
On balance, the waters at Caldes de Boí are weak in mineralisation and recommended for rheumatic, hepatic, respiratory and dermatological conditions. Water from one of the springs is marketed as bottled water while the rest is used to make different cosmetic products.
Regarding lodging, the resort has two hotels: Caldes and Manantial. Caldes has its roots in a hostel founded in 1671. It is a typical mountain construction of stone, slate and wood. Manantial, meanwhile, is a four-story structure built in 1956. With a capacity for 180 guests, it is a modern, comfortable, cosy establishment. The restaurants of both hotels prepare traditional mountain dishes.