Also, they literally just demoed something similar as this project as part of their recent keynote on new openai stuff. The demo featured focused on their new assistant api.
I've actually grilled chat gpt a bit on geographic information on a few occasions. It's not perfect but surprisingly good. It obviously extracts a lot of that from things like wikipedia.
You can actually ask it to answer in geojson format, paste it in geojson.io and end up with a usable map. It seems to know about a lot of landmarks; including coordinates. For smaller venues, the coordinates are not super accurate.
You can also ask it to provide geojson for the boundingbox of a city or area. I even asked it to pretend to be an in car navigation system and provide me with directions to an address. It half succeeded in listing correct streets but messing up right and left. With the latest chatgpt it just asks bing.