Free climbing Frenchman Alain Robert... just awesome.. In front of a crowd of about 100,000, 'Spider-man' Alain Robert made it to the top of Abu Dhabi's tallest building, the 185m Investment Authority, without any safety gear. The 44-year-old, who suffers from vertigo, used tiny slots in the concrete for purchase. you gotta check this out.. I have posted some pics of this in my news blog.