South Avenue Bar, a modern bar with an extensive cocktail menu, has opened at 643 Fifth Ave. S. in Naples, the Fifth Avenue South Business Improvement District announced. South Avenue Bar was established by the owners of the adjacent L’Olivo Ristorante. The bar specializes in mixed drinks and offers draft beer, Greek tapas and other small bites. South Avenue Bar also provides fine cigars and cigarettes. The lounge is open daily from 4 p.m. to 2 a.m. For its official grand opening, South Avenue Bar will host a celebration on Jan. 13 with music and giveaways. The first 50 guests will receive a complimentary appetizer and drink specials.