1) Lake island of Europe 
Valaam (Russian: Валаам or Валаамский архипелаг), also known historically by the Finnish name Valamo, is an archipelago in the northern portion of Lake Ladoga, lying within the Republic of Karelia, Russian Federation. The total area of its more than 50 islands is 36 km². The largest island is also called Valaam. It is bes...