Half Dome, USA (8,842 feet/2,695 meters)

Half Dome, a granite monolith in California’s Yosemite National Park, is a symbol of the American wilderness. Its distinct shape, with a sheer rock face on one side and a rounded dome on the other, beckons hikers to approach. Hiking to the top of Half Dome involves ascending a steep, cable-assisted route known as the “Cables Route.”