For Chongqing, China, a fast-growing metropolis with dangerously strained open space resources, the landscape architect-initiated Mountain City Green Chain program establishes an unprecedented approach to new development: using connected open space to create long-term environmental, community, economic and cultural value. By finding the best performing relationships between these realms, the city is positioned in a sustainable direction. The development is planned as a community resource, a place to gather, exercise, experience and learn about nature.