Very cool.
As a kid in Boston, a couple of Subway Stops and an interesting Escalator. They where a bit wider then this one, but had wooden "stairs". But the "stairs" were slanted downward. When wet, you had to be careful. I wish I had taken pictures of them.
They were ripped out in the 70s. I wish they had kept one of them as an historical oddity.
FWIW I have not been there for a while, maybe one I was not aware of still exists :)