Prespa

Declared in Greece in 1974 and later extended with matching reserves in Albania and North Macedonia, Lake Prespa is one of the oldest lakes in Europe, with more than a million years of unbroken history, and supports the largest breeding colony of Dalmatian pelican on the planet. The three-country cooperation over its joint management, formalised in the Prespa Declaration of 2000, is routinely cited as a model of cross-border environmental diplomacy in a region historically marked by political tension.