South Korea's New Sustainable City Inside An Airport

How do you improve on the best airport in the world? That was the question posed to design firm Gensler, which collaborated with the HMGY Consortium to build Incheon International Airport's Terminal 2--a mini-city within an airport containing everything from a koi pond to an entire retail district. The first thing to understand about this South Korea airport is that it's not in any way comparable to an American airport.