Prohibition ended 86 years ago. The 18th Amendment to our Constitution, ratified in 1919 and enacted a year later, made it illegal to manufacture, sell and consume alcoholic beverages. But booze-loving Americans got crafty, and the amendment gave way to an entirely new industry for the mob—that of underground speakeasies and black market alcohol distribution. The Mob Museum tips its hat to that era with its annual Repeal Day celebration on December 5.

In celebration of the 1933 repeal (that's the 21st Amendment), guests are invited to revisit the Roaring '20s inside the Underground, the speakeasy and distillery underneath the Mob Museum. The bar will celebrate that day the best way possible—with alcohol.

Dance to live jazz and swing music while imbibing cocktails like the Ain't Misbehavin' (Prairie cucumber vodka, elderflower, rosemary and lemon) and the Rum Row (Diplomático Reserva, pineapple, gum syrup, allspice and bitters). There's also Champagne and wine by the glass. And get your hands on spirits-influenced bites from the Underground's kitchen, like all-beef bourbon meatballs, rumsky chicken skewers, martini shrimp cups and more, plus tantalizing desserts like hazelnut liqueur panna cotta cups, gelato shots and bourbon dark chocolate truffles. (For $69, guests get three cocktails and passed bites; $99 includes unlimited cocktails, bites and a souvenir gift bag; $149 includes all of the above, plus a three-course Oscar's Steakhouse dinner.)

Also on tap for the event: a costume contest—revelers are encouraged to dress up in their best Jazz Age threads—and a silent auction to benefit the museum's education initiatives.

Repeal Day in the Underground December 5, 7 p.m.-midnight, $69-$149. Mob Museum, 702-229-2734.