Best Mountaineers of All Time

Reinhold Messner is an Italian mountaineer, adventurer, explorer, and author.
He made the first ascent of Mount Everest without supplemental oxygen (along with Peter Habeler) and was the first climber to ascend all 14 eight-thousanders. - felviper

Hermann Buhl was an Austrian mountaineer, considered one of the best climbers of all time. He was particularly innovative in applying alpine style to Himalayan climbing. He was the first person to ascend Nanga Parbat (solo and without bottled oxygen) and Broak Peak, both eight-thousanders. - felviper

Juan Eusebio Oiarzabal Urteaga is a Spanish Basque mountaineer. He was the sixth man to reach all 14 eight-thousander summits, and the third one in reaching them without supplementary oxygen. He was the first person to conquer the top 3 summits twice, and has summited eight-thousanders 25 times. - felviper

Edmund Viesturs is a high-altitude mountaineer and corporate speaker. He is the only American to have climbed all 14 eight-thousanders, and the fifth person to do so without using supplemental oxygen. He has summitted peaks of over 8,000 meters on 21 occasions, including Mount Everest seven times. - felviper