Megalopolis (And the Visitor from Outer Space) - Cléa Dieudonné

This book joins the citizens of Megalopolis as they welcome a very special visitor - an alien has arrived from outer space to explore the many wonders of their towering town. Teeming with illustrations and full of funny details, the book unfolds to a length of over three metres. It also includes a key to some of the sights children can spot, and is sure to provide hours of entertainment!