A daredevil bungee jumper has become one of the first people ever to dive off the highest footbridge in the world. Brave Callum Lewis, 25, got the once in a lifetime opportunity to bungee jump off the 260-meter-high Zhangiajie Grand Canyon Glass Bridge in China after helping set it up. And while he admits his mum thinks he's a "bit mental", jumpmaster Callum says it's the "best feeling in the world". The jump site took four weeks to complete and on May 26 the thrillseekers were allowed to trial the daunting jump.