Plane-spotting helps my autistic son (bbc.co.uk)

I wonder why the once ubiquitous observation decks of the early jet age disappeared. I'm not terribly interesting in plane spotting, but I can't think of anything more pleasant to rest my eyes on while waiting for a flight than these fascinating pieces of machinery and all the ground activity that their operation entails while waiting for a flight. And it would be even more valuable to the autists who go to the airport just to watch planes.