Olivia mentioned the City is all about public atriums these days – one in the Sony Centre I was told to see. They are essentially covered mid block connections and indoor public space probably makes sense for the cold climate too.
In visiting the David Rubenstein Atrium, I think they do feel like especially funny private- public spaces. I have noticed that most plazas by developers have to be signed to let people know they are public. There is something a bit weird about that, since I think with good design it would be pretty obvious that is is a public space. But admittedly that is especially hard in the atrium context, and outside signage helped. I found it a beautiful space but a very enclosed intimidating space (it did not feel like a”public” space)