Damon said in an interview with the YouTuber Jake Hamilton that an artist wants to add a permanent bronze statue of Williams in the lagoon area of the Garden [in the spot where where they filmed the famous bench scene in Good Will Hunting].
“The idea being that if you feel alone you can go sit next to him, which I think is the coolest idea. It would be like the most beautiful installation and like such a tribute to that guy, who I think would’ve loved that.”
It’s linked in the top level comment of the OP you’re replying to