Floating cities offer a futuristic solution to rising sea levels and overcrowding. These habitats would be designed to float on oceans, equipped with sustainable energy, water recycling, and food production systems. Architects and engineers face challenges in stability, safety during storms, and environmental impact. Projects in various countries explore prototypes and concepts. Floating cities could provide new living spaces while reducing pressure on land resources. Although still experimental, they represent innovative thinking to address climate change and urban growth.