The artificial lake of Agia is 9 km away from the city of Chania, in the homonymous village of Agia. The lake has an area of ​​450 acres and south connects with the Fasá valley. The valley receives the waters from Lefka Mountains through many underground springs.

The lake was formerly a swamp. After the PUBLIC Power Corporation interventions, it becomes artificial for the production of hydropower, now the factory does not work, but ithe visitor can see the old part of hydropower system in the specially designed area of ​​the museum.

The ecological significance of the Lake of Agia is reflected in the fact that the lake is protected by international conditions. It is a station for migratory birds, hosting important species of fauna such as rare species of frogs and a wide variety of aquatic plants