Lotte World or Lotte World Adventure (Korean: 롯데월드 어드벤처) is a theme park and major recreation complex in Seoul, South Korea. Opened in July 1989, Lotte World consists of a large indoor theme park, an outdoor amusement park called "Magic Island", shopping malls, a luxury hotel, an observation tower, a Korean folk museum, sports facilities and movie theaters. Lotte World's sister theme park, Lotte World Adventure Busan, opened in March 2022. In 2023 Lotte World received 5.1 million visitors, making it the 23rd-most visited theme park in the world that year and the tenth-most visited in Asia.