A 24-hour globally connected planet means a world of cities that never sleep. Nighttime economies can be just as vibrant as dayside counterparts. Entertainment venues kick into high gear, restaurants serve food long into the evening and city services, from hospital to police departments, continue providing support across the city. As people being to leave their homes and venture back into the night, how can cities ensure that they are as safe, prosperous and enjoyable as they are during the day?