Alex Honnold reached the top of Taipei 101, paused on the tiny sphere crowning the skyscraper and summed up the moment with a single word. “Sick.”

American rock climber Alex Honnold summited the Taipei 101 skyscraper — with no ropes or safety net — in an event broadcast live.

Honnold won’t be the first climber to ascend the skyscraper, but he will be the first to do so without a rope.