The spectacular Serra del Cadí comprises a string of charming stone villages and rugged mountains that offer excellent walking for those suitably equipped and experienced. Pedraforca ('Stone Pitchfork'; 2506m) is the most legendary peak in the range, offering the most challenging rock-climbing in Catalonia. The main Cadí range is part of the 410-sq-km Parc Natural Cadí-Moixeró (http://parcsnaturals.gencat.cat/ca/cadi) and hosts a number of staffed refugis in the park for serious multiday hikes.
The villages used as jumping-off points for exploring the area are strung along the picturesque B400 and C563, which run west from the Barcelona-bound C16 from Puigcerdà to La Seu d’Urgell on the C14. These include Saldes, Gósol, Josa de Cadí and Tuixent. The valley makes an exquisite drive too, a longer but super-scenic route between Puigcerdà and La Seu d'Urgell.