First Domestic Theme Park. The Largest Indoor Theme Park in the WorldLotte World opened on July 12, 1989, starting the era of full-scale theme parks in Korea. It was registered in the Guinness World Records as the largest indoor theme park in the world on 1995. Moreover, it is regarded as one of the world’s best theme parks along with Disneyland in the US and Japan (one of the world’s TOP 10 theme parks selected by Forbes Magazine). It is visited by over 8 million customers on the average in a year, and the number of total visitors since its opening in July 1989 passed the 90 million mark. Foreign visitors account for 10% of the total visitors, and this shows that Lotte World is now one of the world-renowned tourist attractions in Korea as well as a favorite theme park among Koreans.