This document summarizes a conference paper on smart environments. It discusses how smart cities and buildings can help address issues like population growth, urbanization, and climate change impacts. It provides an overview of key components and benefits of smart environments, including interconnectivity, improved quality of life, and resilience. The paper then focuses on Lagos, Nigeria's smart city initiative, highlighting projects to develop technological infrastructure using AI, robotics, and renewable energy. It reviews literature on smart city initiatives and sustainability indicators, as well as the features and adaptability of smart buildings. Finally, it concludes that smart urban planning can improve environmental, economic, and social outcomes, and appropriate policies are still needed.