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Many cities are facing challenges of urban sprawl, traffic congestion, diminishing quality of life and increasing pressure on their natural environment. Recent advancements in information and communication technologies (ICTs) such as wireless sensor networks and ubiquitous computing are potential tools for addressing these problems. How can the emerging technologies be used to create smarter, greener and more economically efficient cities? To what extent can ubiquitous technologies add value to place, community and environment? The paper examines current trends in ICTs such as wireless sensor networks, RFID, mobile devices and their potential roles in making cities sustainable. The paper develops a conceptual ICT implementation framework to make Gold Coast an intelligent and sustainable city. It examines the potential application of sensors for activities such as event and tourism management, enabling innovation, smart infrastructure, liveability and disaster resilience. Lastly, the paper discusses the practical and policy challenges of implementing these ideas in terms of issues such as privacy, affordability, security and stakeholders' engagement.