Bernard Sleigh created this detailed An Ancient Mappe of Fairyland, Newly Discovered and Set Forth in 1920. The map depicts locations of various fantasy worlds from literature of the 19th and early-20th centuries.
Now this is my idea of a replica. Based on the map and markers Robb Stark uses to plot army movements in the HBO adaptation of Game of Thrones, the map of Westeros itself is 50″ x 35″ and made of cloth with a paper backing. The map markers are 4.5″ to 6″ tall. The entire set comes with a hinged-lid storage box to hold the set. All for the low, low price of $200, and available in April 2014.