It's an interesting idea
Another species conducting archeological digs, debating the lost details from history, constructing exhibits, and so on. Depending on the alien species you pick, you could get a wildly different result too! Less humanoid species for example may be really shocked, or have trouble understanding what it is they're seeing in humanity (if they even have eyes to begin with, that is! haha) So I say let your imagination roam. Maybe youll stumble upon something or put together something really neat! Worms or blobs like that one Star Trek episode, excavating and cataloguing earth post-apocalypse (AD?)