Jeju-do
Millions of tourists visit Jejudo every year, 14.4 million in 2019, and they leave large amounts of garbage behind.  Environmentalists say that too much of Jejudo has been made into roads, buildings and golf courses for the visitors. Some of the residents of Jejudo do not like that there are so many tourists because they use up the water and leave garbage on the beaches.  Because many of the restaurants and hotels are owned by people from China, locals do not always get much money from visitors