Blue21 is an innovative organization focused on developing sustainable floating solutions for urban living. Their primary goal is to create floating cities that can adapt to rising sea levels and climate change. By utilizing advanced technology and eco-friendly materials, Blue21 aims to provide a viable alternative to traditional land-based urban environments. The concept of floating cities involves designing modular structures that can be assembled on water. These cities are intended to be self-sufficient, incorporating renewable energy sources and efficient waste management systems. Blue21 collaborates with various stakeholders, including governments and environmental organizations, to promote sustainable urban development in coastal areas.