Ryugyong Hotel in Pyongyang, North Korea, is one of the tallest unoccupied buildings in the world. Construction on the "Hotel of Doom" began in 1987 and has stopped and started several times.

The Lotte World Tower is the tallest building in South Korea and the sixth tallest building in the world, with 1,821 feet to its name. Also designed by KPF, it holds offices, apartments ...