Lake Ladoga located in Russia, is the largest lake in Europe at a size of 7,000 square miles. It is 136 miles in length and 750 feet deep. It is known for its fresh water. Lake Ladoga also has the history, where Soviet troops valiantly hindered the advance of German and Finnish troops during World War 2. It has almost 48 fish species which adds to the attraction for the Tourist. The lake also has around 660 islands of more than 2.5 acres (1 hectare) in area, occupying a total of 176 sq mi (456 sq km). The largest islands are Riyekkalan-Sari, Mantsinsari, and Valaam etc. The climate of that region is cold.