<Li> Cheonjeyeon and Cheonjiyeon waterfalls </Li> <Li> Jeju Stone Statue Park </Li> <P> South Korea has hosted many international events, including the 1988 Summer Olympics, the 1993 Taejon Expo, the 2002 FIFA World Cup (jointly hosted with Japan), the 2005 APEC conference, the 2010 G - 20 Seoul summit, the 2014 Asian Games, and the 2018 Winter Olympics . </P>

What did south korea have to develop to help with visitors