Living on water has always been a fantasy Utopian city but now it has become an impending trend for our future generations. Rather than proposing a single design, Aquaville lays down a system that results in endless possibilities. The fundamental building block is the pontoon which is made up of expanded polystyrene and e’concrete. Modular neighborhoods of 1.5 hectares create thriving self-sustaining communities of up to 250 residents with mixed-use spaces for living, working, and gathering. By clustering neighborhoods and dock modules, larger cities of the required population can be formed. Residents can easily walk, bike or boat throughout the city using electric vehicles. All the built structures are kept below 3 stories to create a low center of gravity and resist wind. Shared amenities like communal green farms, animal husbandry, schools, hospital, and recreational spaces allow residents to embrace sharing culture. All communities regardless of the size will prioritize locally sourced materials for building construction. This project not only focuses on creating a living human ecosystem, it also caters to the marine ecosystem, the e’concrete part of the pontoon ensures the growth of coral reefs and oysters rejuvenating marine life and also create a bio protection layer. These Floating cities can be fabricated onshore and towed to their final site, reducing construction costs. The first phase of Aquaville is calibrated to rehabilitate people of the vulnerable sinking islands and cities around the globe.