It is our essential philosophy that truly vertical cities also mix functions vertically: vibrant cities require a diverse mix of users, bringing different types of activity to spaces at all times throughout the day. The most effective way to achieve this is by mixing different functions within the same building—the mixed-use building. At MVRDV we believe in buildings that mix uses in innovative, unexpected, and exciting ways. We believe in hybrid buildings, where multiple uses are not only mixed together, but interact with each other and enrich each other.