Seoul: The heart of Korea. K-Pop, markets, culture, food, Hongdae and Itaewon. From Seoul, visit the DMZ and a jimjiibang!
Busan: Beach vibes! Start at Haeundae Beach and visit their seafood market. Go to Gwangan beach for rooftop bars. Take the subway inland to Seomyeon for shopping and bustling local life.
Daegu: The 4th biggest city in the country and the most underrated city in South Korea. The food is incredible, the shopping is top notch and it's full of expat teachers rather than tourists.
Jeju Island: Often called “the Hawaii of South Korea” with waterfalls, soft sand beaches, and cheap flights.