A tiny speck more than half a mile in the air, a French skyscraper climber successfully scaled the world's tallest building Monday, even navigating the tapered spire that extends beyond the top floors of the Dubai structure.
Alain Robert's climb up the 2,717-foot tall Burj Khalifa took just over six hours.
Unlike on many previous climbs, the daredevil, 48, used a rope and harness to comply with organizers' requirements in the Gulf sheikdom that opened the tapering metal and glass tower in January last year.
Robert has climbed more than 70 skyscrapers, including the Empire State Building, Chicago's Willis Tower and the Petronas Towers in Kuala Lumpur, Malaysia, according to his website. He conquered Taiwan's Taipei 101, which before the Burj was the world's tallest building, in 2004.