The Songdo International Business District in Incheon, west of Seoul, is seen in this aerial photo, February 23, 2010. With total building costs set to exceed $20 billion, the Songdo International Business District is, according to its backers, the largest private development project ever undertaken. New York-based Gale International and South Korea's POSCO Engineering & Construction is Songdo's main developer. The city plans by 2014 that it includes 50 million square feet of office space, 9,000 new homes, a 100-acre park, top-ranked schools and a Jack Nicklaus-designed golf club. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: CITYSCAPE BUSINESS)