Fodor's Expert Review Arouca Geopark
Covering an area of 126 square miles, this UNESCO-recognized park is famously home to one of the longest pedestrian suspension bridges in the world, the 516 Arouca. The dizzying construction hangs 175 meters (574 feet) over the Paiva River, stretching for 516 meters. The park itself is surrounded by the Freita, Montemuro, and Arada Mountains and crisscrossed by several rivers including the Paiva River, which makes it a great place for canyoning, canoeing, kayaking, and mountain climbing. There are 41 significant geosites—including a collection of giant trilobite (ancient marine animals) fossils, some of which are 465 million years old—and 14 mostly easy hiking trails that take visitors to the sites. The park is also home to the world-famous Paiva Walkways.