Nazaré, Portugal is world-famous for its gigantic ocean waves, some of the largest ever surfed on the planet. Thanks to an underwater geological feature called the Nazaré Canyon, waves here can reach heights of 80 to 100 feet (24 to 30 meters) during the peak winter season. These massive swells form with incredible power and crash dramatically against the shore, attracting big wave surfers from around the globe. The sight of these towering waves thundering down is both awe-inspiring and terrifying, making Nazaré a legendary location in the surfing world.