If you plan to go to South Korea, try checking this website:
http://english.visitkorea.or.kr/enu/SI/SI_EN_3_2_2.jsp?cate=&area=&dateStart=11-20-2014&startDate=20141120&dateEnd=12-31-2014&endDate=20141231&keyword=&category=&areaCode=&gotoPage=2&stype= & cid = & out_service =
Because your visit to South Korea will be very interesting when the festival is taking place. So, before going to Korea, check the website above first, who knows your arrival coincides with the festival that will be held in the city you are visiting.
Here I attach some photos of the two festivals I visited in October 2014, Jinju Lantern Festival and International Busan Fireworks Festival.
Jinju Lantern Festival
International Busan Fireworks Festival
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