One of the best-known lakes in Russia, Lake Plescheyevo is located in Yaroslavl Oblast near the town of Pereyaslavl-Zalessky. Formerly a resort for Russian tsars, the lake is now a part of the Plescheyevo National Park. It is about 51 square kilometers in size and measures 25 meters deep in the middle. The water is very shallow for about 200 meters from every shore and the lake is very popular for camping, swimming and fishing. Some people even use it for windsurfing during the summer months.