As one of the six mega-project sites known as the Han River Renaissance Plan, the city of Seoul Korea is transforming the 300-acre Magok site of ex-urban sprawl and marginally productive agricultural land into a new major metropolitan park thematically focusing on history and nature. With over 300 entries worldwide Thomas Balsley Associates, in collaboration with Samoo Architects, received first prize in the international design competition run by the City of Seoul. The design proposes a unique vision for this 21st-century eco-urbanscape posited to redefine contemporary conditions between urban/land/water/people. As water is the central thesis for the park, an extensive water management system has been developed where filtration and revitalization is vital to the life and health of the park.