The developing telecommunication infrastructures are shaping future opportunities in Smart Cities. Such infrastructures are required to meet the unprecedented needs in terms of energy efficiency, security, scalability, and resiliency. In this talk, we will focus on Low-Power Wide Area Networks (LPWAN) and their role in enabling Smart Cities. LPWANs represent a novel wireless communication paradigm, which will complement traditional cellular and short-range wireless technologies in addressing diverse requirements of applications for Smart Cities. LPWANs are attracting a lot of attention primarily because of their ability to offer large coverage and long battery life operating devices. We will also provide a use case of deploying a wireless LoRa infrastructure that supports various indoor and outdoor services for the citizens of future Smart Cities.