This document discusses smart cities, defining them as cities that use information and communication technologies to improve quality of life, efficiency, and competitiveness while ensuring sustainability. It outlines some of the main reasons cities need to become smarter, like growing populations, scarce resources, and traffic issues. The key aspects of smart cities discussed include citizen infrastructure, administration, assured utilities, transportation, housing, connectivity, governance, security, education, and economic opportunities. Specific smart solutions around underground transmission are also presented, along with examples of some of the world's top smart cities and India's smart city projects.