It’s actually very cool with a very long history to dig through. How I got introduced to parkour in the very nascent days (at least in North America). Prior to that I was just a 12-13 year old who liked rock climbing, and it served as encouragement to trespass in the most fun ways possible.

Some stuff hasn’t aged all that well (made by a dude on the early 2000s internet, is what it is), but 100% worth checking out.