Issues such as climate change, energy crises, population growth and the increasing concentration of residents in urban areas are the challenges of the future, and some solutions to these challenges are already on the way. New plans for floating cities are one of these answers. Starting from a pilot project in the city of Singapore the study proposes viable urban planning solutions applicable to many coastal cities of the world. Singapore serves as an exemplary case study, having expanded its territory through land reclamation in recent decades, a practice that, though effective, is environmentally detrimental and unsustainable in the long run. As an island surrounded by smaller islands, Singapore is a city-state grappling with limited land availability, a burgeoning population, and a flourishing economy that continues to attract many. These factors underscore the urgency of our study, aiming to address future challenges and alleviate concerns about what lies ahead.