From the Architects:
The Nine Bridges Country Club-Clubhouse is a 16,000-squaremeter facility that serves a golf course. It has an underground level and three floors above grade. There is a main building, VIP lobby building, and a structure with private suites. The atrium and the upper portion of the main building include timber columns and a glass curtain wall, while the base is made of stone (random rubble masonry typical of Korea). The timber area includes the reception zone, a member’s lounge, and a party room. The stone podium houses locker rooms, bathrooms, and service areas. The roof over the main building measures 36 x 72 meters. The unusual tree-like timber columns in the atrium reach to a height of three stories. The partial-timber structure was used to conform to Korean regulations that do not allow timber buildings to exceed 6 000 square meters in size. The first floor of the atrium has 4.5-meter-wide glass shutters that open fully.
For more information about Shigeru Ban's 2014 Pritzker Prize, please read http://www.architectmagazine.com/architecture/shigeru-ban-architects-wins-the-2014-pritzker-prize_o.aspx