Vienna invented this smooth version of a croissant to celebrate the defeat of the Ottoman army, whose flag features a crescent moon. To this day, croissants are taboo in certain Muslim countries. Popular belief holds that Vienna-born Marie Antoinette introduced the pastry to France in 1770, and a Viennese admiral then launched a bakery in Paris, where they became world-famous with the flakier version we have come to enjoy. The originals, called Klepferi, are hard to find. But this absolute beauty at Landtmann is as good as it looks. Founded in 1873, the café occupies the ground floor of the Palais Lieben-Auspitz, a popular meeting place for actors, politicians, officials and journalists.