The Treasure Island Redevelopment Master Plan transforms this former military base at the center of San Francisco Bay into a vibrant new neighborhood that serves as a model for 21st century development and city living.The concept embraces the natural forces and beauty of the Bay, and combines a natural park with compelling urban design to create 250 acres of open space and parks, including civic parks and plazas, sports and recreation parks, a waterfront promenade, ferry plaza and harbor waterfront esplanade, wetlands, and a tidal marsh.