French 'Spiderman' climbs world's tallest tower

French climber Alain Robert (C), also known as "Spiderman", is seen as he prepares to climb the Burj Khalifa, the world's tallest tower with a height of 828 metres (2,717 ft), in Dubai March 28, 2011. The French daredevil urban climber on Monday scaled the Burj Khalifa, fighting winds that delayed his ascent for hours. It took him about six hours to climb the more than 160-storey building, using a rope and harness as required by organisers. [Photo/Agencies]

French climber Alain Robert, also known as "Spiderman", scales the Burj Khalifa, the world's tallest tower with a height of 828 metres (2,717 ft), in Dubai March 28, 2011. [Photo/Agencies]