Boo Woods

Boo Woods is a location in the Mushroom World and was featured in Luigi's Mansion. Boo Woods is extremely large and full of creepy looking trees, E. Gadd's lab is found here along with the mansion Luigi won. What is possibly Boo Woods is in Mario Kart DS, in this game it has a large swamp and the trees can move around.

Young E. Gadd also, mentions Boo Woods in Mario & Luigi: Partners In Time. After his lab is destroyed by the volcano he says he will now move to Boo Woods.

Boo Woods is extremely similar looking to Forever Forest.