Lots of laughs on every level in the world's most awesome treehouse! The ninth instalment in the number one bestselling Treehouse series by Andy Griffiths and Terry Denton. The 117-Storey Treehouse is the ninth book in Andy Griffiths and Terry Denton's wacky treehouse adventure series, with the laugh-out-loud story told through a combination of text and fantastic cartoon-style illustrations. Andy and Terry have added thirteen new levels of crazy fun to their fantastic ever growing treehouse. So what are you waiting for? Come on up!