Access to the park. We can get from Barcelona via the C-16 to Baga, where the southern mouth of the tunnel of Cadi, after which you access the Cerdanya. Another option is to take the train line linking Barcelona with Puigcerdà or bus line Barcelona-Andorra. Epoch. Any time of year is ideal to visit the Park balloon, and once there we can use to make other sports. In winter the snowy landscape is evocative and ideal for skiing or snow shoeing. In summer the two GR through the park are a coming and going of people fleeing the stifling embarrassment of big cities.