The 91-Storey Treehouse

The concept is so imaginative and over-the-top—I'm curious whether Andy Griffiths had a real inspiration or if it was all from his playful mind.

There are so many silly gadgets and ideas—what's everyone's favorite zany invention or funniest moment in the book?

The artwork really brings the crazy treehouse to life and adds so much personality. I wonder if the illustrations were planned from the start or evolved during the writing process.