I used to help run the New York Area Theory Day, which had decades of tradition and it was co-organized by IBM, Columbia, and NYU: NYU webpage and Columbia webpage
At some point I thought it would be fun to maintain a list of all theory events in the New York City area, but I don't live there anymore: NYC Area Theory Events
When I was younger and had more time, I liked to take pictures. You can see some examples here.
