The 13-Story Treehouse by Andy Griffiths

The 13-Story Treehouse : Paperback : Square Fish : 9781250070654 : 1250070651 : 07 Apr 2015 : The first in a new series by "New York Times"-bestselling author Griffiths. Andy and Terry live in a treehouse. But it's not just any old treehouse, it's the most amazing treehouse in the world! This treehouse has 13 stories, a bowling alley, a see-through swimming pool, a secret underground laboratory, and a marshmallow machine. Illustrations.