Amid rapid urbanization, the development of environmentally sustainable and livable cities requires multifaceted strategies that integrate green infrastructure, efficient public transportation, and comprehensive land-use planning. One effective approach is incorporating green spaces such as parks, community gardens, and green roofs into urban design to combat heat islands, enhance air quality, and provide recreational areas for residents. Additionally, investing in robust public transportation systems can significantly reduce carbon emissions by decreasing reliance on private vehicles. For example, cities like Copenhagen have achieved notable success through extensive cycling networks that prioritize pedestrian and cyclist accessibility over cars. Another crucial component involves smart land-use planning that promotes mixed-use developments where residential, commercial, and industrial zones are harmonized to reduce commute times and enhance local economies. Furthermore, the adoption of renewable energy sources such as solar panels on buildings or district heating systems utilizing geothermal energy can contribute to a city’s sustainability goals by reducing dependency on fossil fuels. These strategies collectively ensure that rapid urbanization does not come at the expense of environmental health or quality of life but instead fosters a resilient and thriving urban environment capable of supporting future generations.