I just found this on Tor.com. Artist Martin Vargic has recently completed a fictional map that acts as a compendium of world literature, now available in a poster form on Zazzle. For those who prefer simply viewing it on the Internet, it can be found at Halcyon Maps. I gotta say, it's quite an experiment. It's a bit crowded, but that seems to be because the artist had a lot to say. I recommend it to map and literature lovers.
The Tor article can be found here: https://www.tor.com/2019/10/23/this-wonderful-map-charts-out-the-wide-world-of-literature/
The page on Halcyon Maps is found here: https://www.halcyonmaps.com/maps#/map-of-the-literature/
If you want to buy the poster, check it out here: https://www.zazzle.com/map_of_the_literature_poster-228811969529355083
Busy, but stunning nonetheless. This is something I'd like to have in my study framed, but I am short on wall-space (almost all flat surfaces are covered in shelves). The map itself reminds me of the kind of quality I admire over at the Cartographer's Guild: http://www.cartographersguild.com