A list of the tallest buildings in South Korea, with photos. These are the highest buildings in South Korea, skyscrapers that tower over their respective cities. When we examine a country's tallest structures, we often discover a timeline of that country's economic success. Why? Because skyscrapers are a structure typically built only during healthy economic times. The tallest building in South Korea is currently the Northeast Asia Trade Tower. You will find it and plenty of other steel towers within this list of South Korea's tallest buildings.