The concept of sustainable urban development encompasses an equitable and holistic approach of development of cities and when we talk about holistic development, lakes and water bodies as such form an is an important feature in the landscape. The importance of green infrastructure includes conservation and restoration of lakes, environmental benefits of which can enhance and influence the quality of life and economy of any city. What is actually the significance of lakes in building sustainable cities? What are the various technologies that can be used to safeguard lakes in cities and how could these be included in the Smart Cities Mission? What policies need to be introduced or changed to safeguard lakes and bring about an ecological balance? Find out in this episode of IET India Smart Cities podcast series.