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Take a peek inside our new 'How Cities Work' book from Lonely Planet Kids.
Curious explorers 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 the streets you walk on every day?
Find out more about our How Cities Work title: http://lptravel.to/TDrZRj
To find out more about Lonely Planet Kids: