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).

The Narrows in Zion National Park is one of the most unique and famous 'hikes' in the world because there is no trail—the Virgin River itself is the trail. Taking place inside a spectacular slot canyon where sweeping, striated Navajo sandstone walls rise perfectly vertically up to 1,000 feet (300m) above a river sometimes only 20 feet wide, hikers wade, walk, and occasionally swim upstream against the current. The classic 'Bottom-Up' route starts at the Temple of Sinawava, offering a choose-your-own-adventure experience where you can turn back whenever you wish. The visual drama of the deep, twisting canyon, illuminated by reflected golden light bouncing off the water and canyon walls, creates an otherworldly environment.