I’ve noticed there’s a trend now in KDramas to film parts outside of Korea. “Descendents of the Sun” was partially filmed in Greece and Legend of the Blue Sea had portions filmed in Spain.
And parts of Goblin were filmed in Quebec.
My wife is watching KBS right now and they are doing the theme from Magic Castle, so I thought I would leave a link:
https://www.youtube.com/watch?v=e8eOaGfBDGU