When I was about 6-7 I used to get taken to a soft play/ cafe place at Ocean Terminal every now and then. There was this huge climbing part that looked like this:
The only difference was there was layers of it you climb up to reach the top of the soft play, with a hole left in different corners so you climb climb up/down without hurting yourself.
After climbing down it and sitting with the fam, I looked at it to see this kid jump all the way from the top to bottom which is physically impossible. Never forgot it