We are referring to Lake Ohrid.
As you can see on the map, it is situated in the southwest of Macedonia and the eastern side of Albania. The lake has a unique ecosystem and therefore it is part of the UNESCO World Heritage List. One of the most important towns around the lake is Ohrid, where we had a brief stop.
Ohrid was a lot bigger and more touristic than we had expected. When we arrived at the lake itself, we quickly understood why; it is simply picturesque.