This is a stunningly detailed poster map of HP Lovecraft's dreamlands by Jason Thompson (the same artist who created yesterday's White Plume Mountain and Tomb of Horrors maps). You should definitely check it out - and it also has the option of being printed out at 24" by 36"! That's a lot of unspeakable madness in one map.
Color Map of H.P. Lovecraft’s Dreamlands | Mockman.com