A sketch book with annotations about its construction IKEA Building Guide A meticulously detailed treehouse that resembles the inventor's concept drawing This bizarre structure appears to have been built directly in and around the branches of a sturdy tree The tree itself is drawn with a level of realism, showing textured bark and a sturdy trunk, while the The tree is more imaginative and detailed. An intricate treehouse with magical and technological elements interwoven around an ancient tree. Winding stairways and precarious corridors connecting different rooms and twisting niches. Written annotations and blueprint-like diagrams frame the treehouse, suggesting its creator's ideas. Blueprint