French 'Spiderman' climbs world's tallest tower

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]

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