Balneário da Fonte dos Frades is a thermal bathing site located in Caldas da Rainha, Leiria District (Portugal). Its thermal water reaches around 35°C, and the site offers indoor pools, massage services and a sauna.
Insider tip — Caldas da Rainha — Queen's Hot Springs — is named for Queen Leonor who allegedly discovered the springs in 1484 and founded Europe's first thermal hospital on the site. The Fonte dos Frades (Friars' Spring) is part of this five-century continuous tradition — one of Europe's oldest documented mineral spring sites, still drawing sulfurous water from the same ancient source. The town's ceramic arts, especially the famous phallic rooster figurines, add a quirky cultural layer to any visit.