The Neva River is a river in northwestern Russia that originates from Lake Ladoga and flows from east to west, flowing through St. Petersburg and flowing northwest to the Gulf of Finland. The total length of the river is 74 km, 28 km of which is located in the territory of St. Petersburg. It is known as the mother river of St. Petersburg and the soul of St. Petersburg. The Neva River is located in the waterway of St. Petersburg, with a total of 50 branches. The city of St. Petersburg is divided into four parts by the tributary of the Neva River. There are many bridges on the river, and they are different and different. More than 700 bridges connect the islands and are beautiful. Therefore, St. Petersburg is also known as the Venice of the North.