Discovery of the Caldas treasure Historical milestone · Caldas de Reis, Caldas, Pontevedra Image of Caldas de Reis, not of the place itself. A gold assemblage from between 1500 and 1600 before Christ appears by accident, weighing some twenty-five kilos; the 14.9 preserved in the Museo de Pontevedra make it the largest in European prehistory. 1940 Photo: Carlos del Rio (CC BY-SA 3.0) What to see and do in Caldas de Reis