I like seeing k-dramas set in other countries (even if it's only the beginning of the drama) I think it feels more special seeing main leads falling in love with each other in another foreign country :D
here are some I'm thinking of: The Package, Devilish Joy (first half of ep 1), Encounter (ep 1), Legend of the Blue Sea (beginning eps), Man Who Sets the Table (beginning eps), Goblin, Black Knight: the Man Who Guards Me, Are You Human Too, Memories of the Alhambra, The Third Charm (?), Terius Behind Me (only a few scenes though)