Parkour is a sport developed in France in 1980s and 1990s. Practitioners aim to get from one point to another in a complex environment, without assistive equipment and in the fastest, smoothest and most efficient way possible. Parkour is an activity that can be practiced alone or with others and is usually carried out in urban spaces, though can be done anywhere.
Parkour involves seeing one's environment in a new way, and imagining the potential for navigating it by movement around, across, through, over and under its features.
The tricks shown in this video are dangerous even done by experienced practioners. Don't try them at home.