In the last decades, we witness two major revolutions that have a significant effect on our lives: the urban revolution and the big data revolution. Since 2008, more than half of the world's population lives in cities, while in the western world this percentage is considerably higher (above 80% in most of the Americas and Europe). At the same time, new technologies allow collecting data from bottom up customers and consumers and disseminating it back, using advanced technologies. The conjunction between this rapid urbanism and technological advances gave rise to a new domain in the academic and technological world known as "Smart Cities". Current work on smart cities is extensive and carried in many disciplines, while different studies focus on various aspects of this term. These range from studies that regard the smart city as a technology-oriented city (Batty, 2012) through others that emphasize green, sustainable properties of cities, and to works that stress the importance of human capital and high education Albino et al. (2015). In this seminar, we will map the discourses on Smart Cities in terms of topics, dynamics, and interdisciplinary trends, and explore the new roles planners might have due to the evolution of new technologies and data availability.