Get ready to explore the city in a whole new way. This innovative book for younger readers is packed with city facts, loads of flaps to lift, and unfolding pages to see inside buildings and under the streets. Children aged 5+ can learn about skyscrapers, subway systems and stinky sewers. Discover where people live and peek behind closed doors to see what's going on in houses and apartments, or why not find out about what goes on underneath...