The rest of the city is divided into fifteen neighborhoods called barrios, each of which has its own church. Each of these churches have their own patron saint, which is celebrated each year during an event called a "vela." Velas are celebrations of pre Hispanic origin which occur in each neighborhood in the Isthmus area which consist of processions in the main streets and the offering of a ceremonial candle to the patron saint. Each of the "velas" are organized by a mayordomo and includes a "queen" who is crowned with flowers. These velas became annual events starting in the 19th century with European elements such as balls or dances added. These dances have fabrics for decoration, like in Europe in the 19th century, but these have been modified with include indigenous designs, many laboriously embroidered by hand. For these and other special events, women may wear traditional Tehuana dress, with consists of heavily embroidered garments accessorized with large amounts of gold jewelry. This jewelry often contains old, gold bearing coins and gold filigree earrings. In addition, local specialties such as various mole sauces such as negro, rojo, amarillo, coloradito, chichilo as well as tasajo, fresh corn quesadillas and tamales are served. While they began as religious festivals, today, most have lost their religious basis. Most of these velas occur in the summer. The vela of Santa María Reoloteca occurs between 13 and 18 August. The Vela of Guiexoba occurs at the beginning of the year. The neighborhood is divided into north and south into a friendly rivalry of who can bring the best musicians from various parts of the state. In addition there are citywide velas such as the Vela Tehuantepec on 26 December, but the most important is the Vela Sandunga at the end of May.