South-western Finland has - in terms of the number of islands - the largest archipelago in the world consisting 68,300 islands and islets. The interaction of water and land is an exceptionally numerous phenomenon in the entire country: Finland has in total 187,888 lakes, 179,583 islands and 5,100 rapids. In this kind of landscape diversity, the country is in its own class even in the global scale.
In comparison, the number of islands in Canadian Arctic Archipelago is 36 563. Indonesia has 17 508 islands, according to the Indonesian Naval Hydro-Oceanographic Office.