If you're scared of heights, watching this video might give you an adrenaline rush.
Sergei Devliashov is a daredevil known as the Russian Spider-Man, a title he earned by showing off his breathtaking balance and parkour skills from the top of Moscow's tallest buildings.
His stunts are breathtaking, even for the viewer — just imagine what it must be like to be in his shoes.
On second thought, this video takes you as close to being in his shoes as you probably want to be. Check out Sergei's risky moves and learn how he avoids getting fines for putting himself precariously at the top of the world.