Nothing beats spending time by the water while you're on vacation. Bring a picnic to Lake Pena and then stick around for an impressive sunset.
When it comes to sightseeing in Matarraña, Lake Pena is rated by fellow travelers. And in great news for your budget, it's free to enter. Masmut Rocks, Chateau de Valderrobres and Lo Masmut Ethnological Museum will round out your day and are not far from the body of water.