French "Spiderman" Alain Robert scaled one of the tallest skyscrapers in Barcelona without a harness. Bystanders watched as the 54-year-old climbed up and then descended the Torre Agbar, a glass-covered office building known for its night-time illuminations, completing the feat in around one hour. After climbing down, he was arrested by the police, but later he was released. Robert has conquered over 100 structures worldwide without safety equipment.
