French 'Spider-Man' scales 230m London skyscraper French urban freeclimber Alain Robert brought parts of London's financial district to a standstill Thursday as he scaled the exterior of the 46-storey Heron Tower -- the area's tallest building. The 56-year-old so-called "French Spiderman" took around an hour to climb the 230-metre high tower without any ropes or harnesses, while traffic came to a halt as bemused crowds formed below.