French climber Alain Robert scales the world’s tallest tower, the Burj Khalifa. (Reuters)

Unlike his previous climbs, Robert did wear a rope and harness in compliance with the event’s organizers rules to climb the building that clocks in at a height of 2,717 feet. His feats bring to mind the tightrope walking of Philippe Petit, the man that crossed between the World Trade Center towers.

Here’s Robert’s exhausting and exhilarating climb:

Here’s Robert climbing in the United Arab Emerites in 2007: