Great Oak Tree
From Smurfs Wiki - Smurfology
The Great Oak Tree is a common landmark of the Smurf forest where the Smurfs would resort at certain occasions. Gargamel often uses the Great Oak as a waiting point as well, knowing that the smurfs often appear there. In the Season 7 episode "I Smurf To The Trees", it is revealed that Grandpa Smurf planted the acorn that would grow up to become the Great Oak Tree.
