If you are going for Hsq institutions Grendel's Den should really be on that list, they've been around more than 40 years and even won a case that went to the supreme court.
It's great for me to hear that Grendel's is still there. I used to love to go there for their Sour Cream Chocolate cake.
I don't imagine Elsie's diner is there (and also Tommy's). I loved to get bagels at Elsie's of a morning, knowing that the bagel would be infused with whatever else was on the grill that morning.