Those readers of a certain age will remember the original Batman TV series (with Adam West as the caped crusader) in which Batman and Robin would occasionally “scale tall buildings” using the tried and tested special effects method of making the floor of the studio look like a wall and laying the camera on its side to give the illusion they were actually scaling a sheer wall.
This video from Brussels, which has been shot from a truly bizarre angle, reminded me of that TV series and its high tech special effects. Holy High Reach Batman!!