Lake Albano
ITALY
Sonse / CC BY (https://creativecommons.org/licenses/by/2.0)
Lake Erken
SWEDEN
Creative Commons Attribution ShareAlike license version 2.5. (i.e. Photo: R. Rohdin),
Lake Castreccioni
ITALY
Di Alessandro Vecchi - Opera propria, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=16131869
Lake Mälaren
SWEDEN
Foto di Erich Westendarp da Pixabay