A question like “How big is Faerie?” does not admit of a simple answer.
Faerie, after all, is not one land, one principality or dominion. Maps of Faerie are unreliable, and may not be depended upon.
We talk of the kings and queens of Faerie as we would speak of the kings and queens of England. But Faerie is bigger than England, as it is bigger than the world (for,
since the dawn of time, each land that has been forced off the map by explorers and the brave going out and proving it wasn’t there has taken refuge in Faerie; so it is now, by the time that we come to write of it, a most huge place indeed, containing every manner of landscape and terrain).
Here, truly, there be Dragons. Also gryphons, wyverns, hippogriffs, basilisks, and hydras. There are all manner of more familiar animals as well, cats affectionate and aloof, dogs noble and cowardly, wolves and foxes, eagles and bears.