The 26-year-old Ukrainian who goes by the pseudonym "Mustang Wanted" has taken the internet by storm with his vertigo-inducing pictures.

 

He's been seen dangling from buildings, doing pull-ups on abandoned cranes, and climbing up the cables of bridges, all without any equipment, ropes, or perceptible fear.

His self-described "hobby" has led to the popularity of his YouTube channel, and his photos have been popping up all over the web.