When it comes to seeing the sights, Alain Robert doesn't do things by halves. Because the man they call 'French Spiderman' is obsessed with climbing the world's soaring skyscrapers.

One of his most epic feats was scaling Dubai's 185 metre-high Abu Dhabi Building, scurrying up the 35 flights in a record 63 minutes, as a huge crowd craned their necks far below.