Shanghai Tower is a city within a city. It includes nine vertical communities, each of which is 12 to 15 floors tall when the sightseeing area on top of the tower is excluded. Each community is surrounded by a public area between the two layers of glass curtains. The public area offers daily life services to people. The elevator system, exclusively for each community, can transport customers to different parts of the tower smoothly. At the same time, underground public passages and parking areas are linked directly to adjacent super-skyscrapers.