I only went to 2 Kdrama locations during my recent Seoulo trip, and one of them is from Park Bo Gum and Song Hye Kyo's 2018-2019 series Encounter.
It would have been nice to visit colorful and lively locations from the first episode of this aesthetically pleasing Korean Drama, but since we can't fly to Cuba now, this is the next best thing!
One of the Seoul scenes that struck me the most was when Kim Jin-hyeok (Park Bo-gum) brought Cha Soo-hyun (Song Hye-gyo) to an "outdoor art gallery". At first she was reluctant that there's any art gallery that she does not know of in Seoul, but surprise surprise!