Alex Honnold isn't just an accomplished rock climber. He is one of the most daring free solo climbers around, scaling everything from gigantic rock formations to skyscrapers - without any safeguards. Free solo climbing is a type of climbing that forgoes any safety equipment beyond climbing shoes and climbing chalk. That means no ropes, no harness, no anything. Honnold is ready to electrify viewers on Friday, January 23, when he attempts to climb Taipei 101, a 101-story Taiwan skyscraper that is the 11th tallest building in the world.