The DLI (Daehan Life Insurance) 63 Building (63 빌딩 or 육삼 빌딩) is a skyscraper on Yeouido Island, overlooking the Han River in Seoul, South Korea. At 249 meters (817 feet) high, it is the 3rd tallest building in South Korea, the 122nd tallest building worldwide, and is a Korean icon among skyscrapers. 63 probably refers to the building's 63 official stories, of which 60 are above ground level. The top floor nevertheless is considered the 63rd floor. Construction was completed in 1985. At that time, the 63 Building was the tallest building in Asia; it lost this title to the OUB Centre one year later, but remained the tallest building in South Korea until Mok-dong Hyperion I, Tower A surpassed it in 2002.[1]

The lower floors house a large shopping area with approximately 90 stores, an Imax Theater, and an aquarium. A convention center and banquet hall are also housed within the building. The observation deck (known as 63 Golden Tower) on the top floor is a popular place to go to see a good view of Seoul. Special observation elevators are also available; they are equipped with windows to enable their passengers to view the city as they ride up to (or down from) the observation deck.