I’ve included a few pictures here of the plaza at noon or thereabouts. The EPAD, an association which manages La Défense, keeps piling more and more junk on the originally pristine plaza, probably because money is everything and an empty plaza looks like money left on the table to them. But it’s still nice because it’s vehicle-free, unlike most of Paris. There are lots of places to sit for lunch.
The parallel avenue is much quieter, although it still has traffic, and more scenic. The city hall for Neuilly is quite charming, and there are many other charming spots. The American Hospital is in this suburb, although fortunately I didn’t need to go there (but I’ve taken other people there in the past).