A city in northeastern Italy, an important port on the northwest coast of Venice Bay in Adriatic Sea. The population is 343,000. It is mainly built on a shallow beach 4 kilometers offshore, with an average water depth of 1.5 meters. It is connected with the land by railways and highways. A bridge consisting of 1 18 small islands with 177 waterways and 40/kloc-0 boats is called "Water City". It was built in 452 AD. In the eighth century, it was the trade center of the Adriatic Sea. /kloc-The city was founded in the 0/0 century. In the Middle Ages, it was one of the most prosperous trade centers in the Mediterranean. After the opening of the new air route, the European commercial center gradually shifted to the Atlantic coast and declined. 1866 merged into the kingdom of Italy. Industry and commerce are developed, including aluminum smelting, chemistry, coking, chemical fertilizer, oil refining, steel and other industries. It is famous for producing jewelry and jade crafts, glassware, floral leather products, lace and embroidery. Marghella Port on land is an important oil port and passenger port. A famous tourist center with 3 million tourists every year. The ancient St. Kyle Square is the activity center of the city, surrounded by Byzantine and Renaissance buildings such as cathedral and bell tower. Lido is a linear sandbar 2 kilometers offshore and the most famous bathing beach in Europe.