What would the ideal city of the future look like? Sydney-based Laboratory for Visionary Architecture (LAVA) answered that question with a spectacular design for the Forest City, a proposed master plan for a new city in Malaysia. This 20-square-kilometer green smart city would be built around a central rainforest and mimic the forest’s ecosystem by adopting a closed loop system that reuses all its resources and controls out-flow. A group of buildings step down towards the green park and are heavily landscaped with roof gardens. A Landmark Tower will house the serviced apartments, hotels, retail and commercial space. As a pedestrian-friendly development, the design separates the circulation types by directing vehicular traffic underground and placing trains on a level above pedestrian walkways. Like a rainforest, the city will be designed as a closed loop system with recycling processes hidden underground and outflow minimized. Local materials would be used in construction and energy generated from renewable sources.