Nadadouro is one of the sixteen civil parishes (freguesias) that make up the municipality (município or concelho) of Caldas da Rainha, Portugal. The parish has an area of 9.7 km² and 1,422 residents. Geographical location: Caldas da Rainha, Oeste, Lisboa e Vale do Tejo, Portugal, Europe geographical coordinates: 39° 25' 0" North, 9° 11' 0" West The parish of Nadadouro borders.the popular tourist destination of the Lagoa de Óbidos which is a lagoon located in the municipalities Óbidos and Caldas da Rainha, Portugal. It empties into the Atlantic Ocean at Foz do Arelho.