Getting to the museum is no mean feat. First of all permission must be obtained from the military unit stationed at Petritsi, which is four kilometres off the Serres-Promahona National road (Kilkis junction), then the steep fourteen-kilometre-long road leading to Fort Istibey must be negotiated. Foreign nationals must have obtained a special permit from General Army Headquarters.
The museum contains firearms (rifles, revolvers, pistols and machine-guns) belonging to the Greek and German armies, army uniforms of the time, various personal belongings of the defenders, as well as a map detailing the Battle of the Forts. During visits a film is also shown, which tells the story of the battle at Fort Istibey.