Grossglockner — The Gamsgrubenweg Trail

Starting at the end of the high-alpine Grossglockner High Alpine Road (Kaiser-Franz-Josefs-Höhe), the Gamsgrubenweg is a masterpiece of high-altitude trail engineering. It contours high above the Pasterze, Austria's largest glacier, leading into the heart of the Hohe Tauern National Park. The trail passes through several tunnels built to protect hikers from rockfall, eventually opening into the vast, tundra-like 'Gamsgrube' (Chamois Pit), a special protection zone where the rare flora and fauna of the high Alps thrive in the shadow of the Grossglockner (3,798m).

Reinebringen is undoubtedly the highly recognizable and photographed viewpoint in the Lofoten Islands, and perhaps all of Norway. This short, aggressive 1.2-mile (2km) round-trip hike skyrockets out of the ocean to an altitude of 448m. The trail was famously dangerous and eroded due to massive over-tourism, so a team of Nepalese Sherpas was hired to build a massive, 1,978-step stone staircase up the mountain. Conquering the stairs leads to a dizzying, knife-edge ridge that drops vertically into the ocean, offering a mind-blowing bird's-eye view directly down onto the picturesque fishing villages of Reine, Sakrisøy, and Hamnøy, connected by bridges across the deep blue fjords.