See 'Spiderman' scale France's highest tower, sans rope

Alain Robert, aka "the French Spiderman," is one of the most famous urban climbers on Earth, and as this video shows, he remains on the lookout for new targets. Robert often ascends buildings illegally, but this time, owners of France's new tallest building -- the First Tower, in La Defense, near Paris -- gave him permission. Hundreds of onlookers, both in the building and on the street, paused to observe Robert's climb, which he completed without any ropes or a harness to ensure his safety.