Two kids, an alien, a dog: four friends (and a little spider) are the protagonists of “Attenti a quei due,” the first book of the new Archivia series on architecture for children. Through the adventures of the protagonists, young readers can visit cities, discovering the most beautiful places and often mysterious, bizarre histories behind famous works of architecture.Each book in the series is on one city: Milan is the first. The illustrations are by Barbara Parini, with texts by Claudia Mannella.