A long boardwalk along the river Paiva inbetween the hills of Arouca, Portugal. Downstream walk with great views of the river, the hills, some rapids and at the start a view from underneath one of the longest pedestrian suspension bridges in the world: The Arouca '516' bridge: 516 meters long, 175 meters above the river. Well worth a visit if you are ever in the area - but for now, this video might have to do :)