11. Get down at the silent disco
It’s ironic that Seoul’s most rambunctious quarter has also found fame for silence and darkness. Held every few weekends, the Silent Disco sees a troupe of fun-lovers don headphones in Norita Park, then have a silent-to-others walking party around the Hongdae streets. Only the first 300 to arrive get headphones. Then there’s Dialogue in the Dark, which takes place on the ninth floor of the Vertigo building in Sinchon; for ₩30,000 you get to perform various activities in total darkness for an hour or so.