Obligatory historical background: Gyeongbokgung served as the main royal palace of the Joseon Dynasty (if you're interested) and I'm not going to go into it further but you can learn more about it here if you're so inclined. To people not familiar with the culture, it was lots of green oriental style buildings, some of which had pretty things inside. Further photos below (starting with a couple random subway station shots):
So that's a bit of Gyeongbokgung for you. In English it's Gyeongbok Palace, thus giving me the impression that the word "gung" in Korean means "palace". I'm fairly sure my intuition is bang on this time. Next few photos are the museum and some of its contents. The chair with the single wheel and the four sticks for servants to carry you around with is clearly the only way to travel. If you attached an engine to that.. it could be a high speed impaling unicyclic war machine. Just saying.