Urban Planning and Urban Design Sanjiao Eco Island Resort Masterplanning by NDA Group As China's first uninhabited island to be developed into an integrated tourism destination, Sanjiao aims to set innovative and pioneering standards for the sustainable development of maritime tourism resources. The island's untamed natural resources offer a unique opportunity to position it as an ultimate marine educament venue; the entertainment and leisure elements (four seasons water park, sailing school, nature preserve, etc) will turn the island into an all-year round tourism destination.