Storyline map Two-fer

For this Tuesday Two-fer these are both going to be items that need to be clicked on in order to make them large enough to read.  These aren't traditional geographic maps, but rather literary maps.  From Randall Munroe's XKCD there is this astounding map of a few different movie narratives:

 At the actual webcomic, hovering over the image reveals this additional message in the "title-text":

In the LotR map, up and down correspond LOOSELY to northwest and southeast respectively.

That, at least, makes this illustration vaguely geographic in nature.

The other illustration/map is even more exhaustive, this time mapping the entire history of science fiction.  It is a work by artist Ward Shelley, and it's truly breath-taking in its scope: