KPF’s Lotte World Tower in Seoul, South Korea is officially complete, according to criteria established by the the Council on Tall Buildings and Urban Habitat (CTBUH). At 555 meters tall, the building becomes the tallest building in Korea (250 meters taller than the previous tallest building, Northeast Asia Trade Tower) and the world’s new 5th tallest building.
http://www.archdaily.com/868602/seouls-lotte-world-tower-completes-as-worlds-5th-tallest-building