This high-end speakeasy is most famous for its Sherlock Holmes entry. Walk down a nondescript staircase and touch a book on the bookcase and you’ll find yourself in one of the most famous speakeasy bars in Seoul. The bartenders are champion mixologists that can concoct the standard cocktails with flair or even serve their own creations. They have a huge back-lit wall of liquors for a classy and sophisticated evening out with friends.