Lotte World

Lotte World is a major recreation complex in Seoul, South Korea. It is the world's largest indoor theme park.
There is an outdoor amusement park called "Magic Island", an artificial island inside a lake linked by monorail, shopping malls, a luxury hotel, a Korean folk museum, sports facilities, and movie theaters. Opened on July 12, 1989, Lotte World receives 7.3 million visitors each year.