If you use public transport then you can go to these most interesting places:
- Seoul (Insadong quarter + Kyongbokkung palace + Gwanghwamun square + Blue House)
- Kosong demilitarized zone
- Sinheungsa temple
- Hahoe folk village
- Gyeongju (former capital city - mountains + sea)
- Seokguram Grotto - temple (UNESCO)
- Bulguksa temple (UNESCO)
- Busan - temple + sea
- Haeinsa temple - mountains
- Jeju island
- Udo island
And to a lot of others indeed. We have selected these: Andong, Ansan, Asan, Busan, Changwon, Cheonan, Daegu, Daejeon, Gangneung, Geoje, Gimcheon, Gongju, Goyang, Gumi, Gwacheon, Gwangju, Gyeongju, Hyanam, Hwaseong, Icheon, Iksan, Incheon, Jecheon, Jeju, Jinju, Naju, Nonsan, Miryang, Osan, Paju, Pocheon, Pyeongtaek, Sacheon, Sangju, Seosan, Seoul , Sokcho, Suwon, Taebaek, Uiwang, Ulsan, Wonju, Yangju, Yangsan, Yongin