Among the places where the Descendants of the Sun were filmed, there was an art complex converted from an abandoned mine- Samtan Art Mine! It is located in Jeongseon, a bit far from Seoul, those who are interested can consider going there.
More information: http://bit.ly/1xNazsZ
(Someone wrote in the comments below the article on how to get to this place)
太陽的後裔拍攝景點居然有一個由礦場改建的藝術景點- Samtan Art Mines，這個景點在旌善，離首爾比較遠，有興趣的可以考慮一下去！
Pic taken from this article: http://bit.ly/1XDWtUj