Skip to Navigation Skip to Content

Video & Project of the Week for May 25, 2015: Sejong, Public Administration Town

on May 27, 2015 at 6:28 pm under Project of the Week: 5/25/15

Sejong, Public Administration Town
Sejong, South Korea
1,237,850 sf. Greenroof


Project Description & Details

Providing an opportunity to bring cultural ideas and beliefs together to celebrate the spirit of Korea in the 21st century, the 667-acre Administrative Complex Sejong is Korea’s newest city. The complex is now home to 37 government organizations and 13,000 public servants who were previously located in or near Seoul. With a framework of eight levels above ground and one below, the structure totals 3.5 kilometers long – perhaps the longest in the world. In 2007 Balmori Associates won the competition to design the Master Plan for Sejong City and designed it in collaboration with H Associates and Haeahn Architecture.

Balmori Associates says, “We proposed a new approach to city-making, one that starts with landscape architecture. The master plan consists of a continuous linear park on a continuous roof joining all the ministries.” Dictated by the contours of the land that were once hilly but now flattened to make way for as many as 500,000 future residents, a grid of streets and transit runs through the center of the city within a network of green spaces. The connected buildings were designed to look like an Oriental dragon in flight from above and the superstructure on top contains a variety of planted sloping walkways, wide-open expanses, ramps, and corridors – with the government offices below. Three interconnected urban strategies were proposed: FLAT CITY, LINK CITY, and ZERO WASTE CITY. The beautiful greenroof equals 28 acres and the pitches vary considerably, allowing it to slope down to the ground in pedestrian-friendly inclines.

Find more photos and additional information about this project in The International Greenroof & Greenwall Projects Database.


Our 1,600th profile added to the Projects Database, Sejong City is’s Project of the Week in honor of its designer, Dr. Diana Balmori, who is one of the Keynotes for the Greenroofs & Walls of the World Virtual Summit 2015. Enjoy Diana’s 10 minute video “Green Roofs to New Cities” – Now Playing at the Virtual Summit for an exclusive look into this mega project, among others, now playing though May 31, 2015 – last chance!


Year: 2014
Owner: Multi-functional Administrative City Construction Agency of Korea
Location: Sejong, South Korea
Building Type: Municipal/Government
Type: Extensive & Intensive
System: Other
Size: 1,237,850 sq. ft.
Slope: 1-10%
Access: Accessible, Open to Public


Designers/Manufacturers of Record:

Landscape & Urban Design and Master Planning: Balmori Associates
Architect: H Associates, Inc. and Haeahn Architecture
Project Team: Sehan Yoon, Taeman Kim, Diana Balmori, Hangman Zo, Kihong Nam, Hyungshik Kim, Arian Lee, Samgmok Kim
Photography: Efrain Mendez,


Project of the Week Video Feature

Watch the Sejong, Public Administration Town Project of the Week Video below or see it on our GreenroofsTV channel on YouTube:

Did we miss your contribution? Please let us know to add you to the profile.


Would you like one of your projects to be featured? We have to have a profile first! Submit Your Project Profile.

Love the Earth, Plant a Roof!

~ Linda V.