You'll want to put this video on full-screen, at 1080p. Jokke Sommer and Ludovic Woerth drop from gliders ultralights out of a cloudy Brazilian sky, taking the shortest path to the ground—between the 38-story Ventura Corporate Towers, landing in the Praça Tiradentes beyond.

Sommer writes on his Youtube page that the pair did not have permission to make the jump, but helpfully scheduled it for dawn, before flight traffic into Rio began.