Naganeupseong Folk Village, Suncheon (순천 낙안읍성 민속마을)

Straw-roofed houses, government offices, guesthouses and a castle, all from the Chosun Dynasty, remain perfectly preserved in their original forms in this 22 square kilometer historical site.
No, it's not an exterior set of a historical drama, people actually live in those houses and better yet, they offer overnight homestays.
Choongmin-gil, Nagan-myeon, Suncheon-si, Jeollanam-do (전라남도 순천시 낙안면 충민길 30)