Fillory is a fictional magical land featured in the book series "The Magicians" by Lev Grossman. It is a place filled with enchanting landscapes, mystical creatures, and various magical elements, resembling a blend of classic fairy tales and modern fantasy. In the story, Fillory serves as a central setting where characters embark on adventures and face challenges. The land is known for its unique seasons, talking animals, and powerful magic, making it a captivating backdrop for the characters' journeys and personal growth throughout the series.