High Quality Content by WIKIPEDIA articles! This list of tallest buildings in South Korea ranks skyscrapers in South Korea by height. The tallest building in South Korea is currently the 68–story Northeast Asia Trade Tower, which rises 305 metres (1,001 ft) and was completed in 2011, it is also the worlds 75th tallest building. There are two buildings over 300m under construction in South Korea. The Lotte World Tower in Seoul will be 555 metres (1,821 ft) when it is completed in 2015, becoming the worlds 6th tallest building. The Busan Lotte Town Tower in Busan will be 510 metres (1,673 ft) upon its completion in 2016, in which it is expected to become the world`s worlds 10th tallest building.