Puigcerdà is the capital of the Catalan comarca of Cerdanya, in the province of Girona, Catalonia, northern Spain, near the Segre River a…Puigcerdà is the capital of the Catalan comarca of Cerdanya, in the province of Girona, Catalonia, northern Spain, near the Segre River and on the border with France. Puigcerdà is located near the site of a Ceretani settlement, which was incorporated into Roman territory. The Roman town was named Julia Libyca.