The guy in this video is a traceur, a participant of the physical displine known as Parkour. According to the title of the video, the traceur is russian, so I guess it was filmed in Russia too. The video is set in a run-down part of town. There’s no shortage of derelict buildings to scale and leap between. It must be a Parkour’s paradise. From Wikipedia:
Parkour is often connected with the idea of freedom, in the form of the ability to overcome aspects of one’s surroundings that tend to confine; for example, railings, staircases, or walls. The practice of parkour requires considerable physical and mental dedication, and many adherents describe it as a “way of life.”
Don’t try this at home.