Songdo International Business District (Songdo IBD) is a smart city or "ubiquitous city" & " Private town " built from scratch on of reclaimed land along Incheon's waterfront, southwest of Seoul, South Korea and connected to Incheon International Airport by a reinforced concrete highway bridge called Incheon Bridge. Along with Yeongjong and Cheongna, it is part of the Incheon Free Economic Zone. The Songdo International Business District will feature the Northeast Asia Trade Tower, G-tower, and the Incheon Tower. Schools, hospitals, apartments, office buildings and cultural amenities are to be built in the district. Homages of architectural hallmarks, including New York City's Central Park and Venice's waterways, will also be incorporated. This 10-year development project is estimated to cost in excess of $40 billion, making it one of the most expensive development projects ever undertaken. With 106 buildings and 22 million square ft. of LEED-certified space, the green building certification by the United States Green Building Council, Songdo IBD makes up about 40% of all LEED-certified space in South Korea. As of 2020, the population of Songdo exceeds 167,346 people. Ownership and design Gale International holds a majority stake of 61%, Posco holds 30%, and the remaining 9% is owned by Morgan Stanley Real Estate. The plan was designed by the New York office of Kohn Pedersen Fox (KPF). Infrastructure development, labor, and funding are also being provided by the city of Incheon. Development Built on of land reclaimed from the Yellow Sea off Incheon, about from the South's capital Seoul, Songdo district is the largest private real estate development in history. By its completion date in 2015, the district was planned to contain 80,000 apartments, of office space, and of retail space. The 65-floor Northeast Asia Trade Tower became South Korea's tallest building. Computers have been built into the houses, streets, and offices as part of a wide area network. The Songdo IBD was part of former President Lee Myung-bak's effort to promote green and low-carbon growth as an avenue for future development after 60 years of reliance on export-oriented manufacturing. The nation launched a $38 billion economic stimulus package in January 2009, with over 80% of the total earmarked for green investment. The Framework Act for Low Carbon Green Growth, passed by Korea's National Assembly in 2010, increased this to $83.6 billion spanning five years. Under this initiative, the Songdo IBD is being developed as a sustainable city