This zigzag wooden walkway along the Paiva River offers scenic views of the river and the Arouca Geopark. From start to finish, the 8-km-long (5-mile-long) trail takes about 2½ hours and allows visitors to experience the surrounding landscape—waterfalls, granite cliffs, endangered species, and five geosites—without disrupting it. There's river beach access from the walkway, including the popular Praia do Vau midway through, perfect for a refreshing dip. The walkway has a modest €2 entrance fee (tickets required in advance). Near the Areinho entrance, you'll find the spectacular 516 Arouca suspension bridge, though separate €12 tickets are required to cross it. You can access the walkway from either Espiunca or Areinho. Check in advance that all sections of planned routes are open, as some parts required major rebuilding following wildfire damage in summer 2024. If in doubt, go with a walking tour. While there are cafés located at both ends of the trail, make sure you pack enough water and snacks and wear comfortable walking shoes as this is a strenuous hike, requiring you to climb a lot of stairs, and can be especially challenging in the summer heat.