I recently read book nine of the Rachel Morgan/The Hollows series by Kim Harrison, and because Rachel is a witch, she has second sight. One of the few things she does with it (she doesn’t use it as often as Harry Dresden, for example) is see how Vegas would look if it were a complete ruin. It’s a bit more complicated than that because what she’s seeing isn’t our Vegas and she’s not just a witch anymore, but I think you get the idea.
Anyway, it occurred to me that there are probably several other characters who through visions of other versions of reality, through dreams, or through prophecy can see what others can’t: what a place would look like after an apocalyptic event.
These are the other ones I know, but please help me build on it:
Fringe, Olivia Dunham: During the first season Olivia unwittingly sees an alternate dimension that’s under attack overlaid her real location
Knight of the Word, John Ross: John is plagued by prophetic dreams that show him what the world will become like if he and Nest fail to overcome the void
who else? From books, tv shows, movies, comics, all okay.