For one day, Korea’s most revered artifacts are no longer kept behind museum glass. Instead, they stride down runways, pose for selfies and perform choreography in front of crowds — as visitors dressed as golden Buddhist sculptures, smiling 57 B.C.-935 A.D. Silla roof tiles, Bronze Age bells and even a life-size map of the Korean Peninsula. If Halloween is the annual occasion when people borrow the identities of fictional characters, the National Museum of Korea’s costume-play contest has become a distinctly Korean version: one day in September when participants become the cultural treasures they love most. This year, “Dress Like a Museum” drew 275 teams and 643 participants — more than triple last year’s 83 entries — turning what began as a museum participation program two years ago into a fast-growing heritage fandom event. Contestants are not only asked to imitate heritage but also to bring it to life through their own storytelling. Echoing the contest’s poster slogan — “It is time to awaken the artifact sleeping inside you” — the event invites participants to