Since the beginning of the millennium, local nodes with a high density concentration of mixed programs have been used in Korean city planning.

These nodes consist of a mix of public, retail, culture, housing, offices and leisure generating life in the new metropolitan areas and encouraging further developments around them: the Power Centre strategy. These centers would normally sever any connection with nature.

The diverse program has different needs for phasing, positioning and size. To facilitate these complex requirements, each building is designed as a series of rings. By pushing these rings outwards, every part of the program receives a terrace for outdoor life. Planting around the terraces with a floor to floor circulation system store water and irrigate the plants. The roofs of these hills and terraces are planted with box hedges creating a cohesive, vertical park. The greenery will improve the climate and ventilation, reduce energy and water usage. As a result, the city itself becomes a kind of landscape.

Time Magazine: 100 Green Designs 
'Call it responsibility or accountability. Or simple popular demand. The rarefied world of design is embracing the environment as never before. Top architects are implementing revolutionary methods. Fashion and furniture mainstays are manufacturing products using sustainable materials. And luxury empires are establishing credos on issues their customers are still waking up to. Behind the scenes, trailblazing executives are taking big risks to make it all happen — beautifully.'