The Hundred Acre Wood of the Winnie-the-Pooh stories is in fact Five Hundred Acre Wood in Ashdown Forest and is a real place in East Sussex, England where the Winnie-the-Pooh stories were set.
The author of probably the most loved children books A. A. Milne's country home was at Cotchford Farm, Hartfield thats situated just north of the woods.
Even if you walk down the hill you will find Pooh bridge. Its a magical place and if you visit you will see how A A Mile's was inspired by this wonderful Beech woods.