The Smart City concept consists of a new urban environment, capable of managing itself in a sustainable way, for the benefit of its citizens, through the use of communication technologies. Smart City's applications will require a new network infrastructure, able to satisfy their demands in quality of service. This project analyses these requirements in order to propose a hybrid optical-wireless network architecture acting as the Smart City Metro-Access network, mainly focusing on the network design and planning. The Aalborg commune in Denmark is used as a case study for implementing the proposed architecture. Optimization algorithms are used in the radio and fibre planning for maximizing the architecture efficiency.