You could go to Mr. Mahjong's several days in a row and have completely different experiences each time. This Financial District cocktail bar packs its calendar with near-nightly events, like live music, comedy shows, calligraphy workshops, and, naturally, mahjong nights. Depending on what's happening, you'll find the action either upstairs or downstairs, both of which have the same dark, speakeasy feel with glowing red lanterns and the occasional Chinese lion head.