many good places in korea, this my list the best place I like in korea:
1.1. Seongsan Sunrise Peak
Hydrovolcanic eruptions formed this majestic volcanic crater 5,000 years ago on Jeju Island.
A UNESCO world heritage site, the peak is famous for many things, including numerous rare plant species, but is best known for the magnificent sight of the sun rising over it (hence the name).
The climb up the peak's northwest side ridge (its other sides are steep cliffs) to the 180-meter highest point takes 30 minutes.
2.Ggotji Beach
Located four kilometers southwest from Anmyeon-eup, this cream-colored beach is the ideal place to go for a drive and watch the sun sink into the ocean between two large rock formations known as the Granny Rock and the Grandpa Rock.
Legend has it that the wife of a base commanding officer in the Shilla Dynasty became the Granny Rock when she died after waiting faithfully for her husband.
3.eungdo Salt Farm
This treasure island (artifacts from the Song Dynasty have actually been found at the bottom of the sea) is famous for its clear seawater, soft beach, and salt farms.
The magical sight of huge salt farms is not the only spectacle that can be found here; the mud flat leisure town allows tourists to experience and observe the marine life of the mud flat.
4.Chunwang Peak, Jiri Mountain
At 1,915 meters, Chunwang Peak on Jiri Mountain is the second highest peak in South Korea and the beloved conquest of many a Korean mountain climber.
The national park on Jiri Mountain stretches over five cities and three provinces, and is home to quietly dazzling flora and fauna as well as seven national treasures and 26 treasures.
Many tread the trail to Chunwang Peak to watch the sun rise, some simply to enjoy the view from the top, and others for the pleasure of breathing in the crisp, clean mountain air and drinking the brain freeze-inducing spring water of Chunwang Spring, which is located just 300 meters below Chunwang Peak.
for more place you can visit
http://edition.cnn.com/travel/article/south-korea-beautiful-places/index.html