In the decades following the Second World War, youthful sociability was remade as young people across Britain flocked to newly-opened coffee bars, beat clubs, and discos. These spaces, increasingly unknown and unfamiliar to the adults who passed by them, played a remarkable role in reshaping town and city centres after dark as sites of leisure and recreation. Telling the history of youth in post-war Britain from the ground up, through the towns and cities that young people moved through, this book traces how the new spaces of post-war youth leisure transformed both young people's relationship with their local environment and adults' perceptions of the possibilities and dangers of modern leisure. Growing up and going out offers a timely study of youth, commerce, and leisure that explores the reimagination, remaking, and regulation of the post-war city after dark.