Opened in 1951, the railway connecting Lleida and La Pobla de Segur was part of a trans-Pyrenean project that intended to link the city of Lleida with Saint Girons, across the border. But the entire route was never completed. Today we can make this nostalgic journey to La Pobla de Segur thanks to two diesel-powered locomotives from the 60’s known as “ye-yés”. Along the way there are four reservoirs, 41 mountain tunnels and 31 bridges, always with views of the Noguera Pallaresa River Mont-roig and Montsec mountain ranges. The trip in the Tren dels Llacs takes an hour and fifty minutes.