Blue Sapphire is a flood resilient, semi-tsunami and semi-earthquake resilient city located on the east coast of Malaysia that accommodates 100,000 citizens. The city is planned to be visually open with medium and high rise skyscrapers and uses maglev transportation. It has underground pipes to channel sewage and organic waste to treatment plants. The energy system uses local solar and wave energy. The city is divided into zones with different flood resilience measures like turf walls, mobile buildings, and earthquake-resistant immortal walls.