Originally built in the 15th century as a boarding house for travelling merchants, as Jezersko is located along one of the major routes between the historic regions of Carniola and Carinthia, there is still some debate as to how the large peculiar building got its name. Although it never officially served any military purpose, some say that it simply resembles a military structure, while others proclaim the more romantic notion that Napoleon's troops stayed here during the time of the Illyrian provinces. Regardless of its history, nowadays the premises house a fine rural ethnographical museum with a diverse collection of items. Perhaps the most interesting are some well-preserved inscriptions left on the walls by travellers several centuries ago - a type of historical graffiti! To get there, take the road north towards the Austrian border, there's a sign reading 'Jenkova kasarna' directing you to take the second right.