This mountainous territory in the heart of the Serra de São Mamede Nature Park is home to a vast lake framed by green and rocky uplands. The resulting scenery is not only unique but also hard to imagine. Atop its rock, Marvão is visible in the distance and the landscape is dotted by little villages and scattered hamlets that have grown up alongside streams, fertile valleys and forests of chestnut trees. They are a feast for the eyes and soul of anyone who wanders here at leisure.