Fort Agnolo - Fort Prussian fortress, built in the years 1854-1858 during the reign of King Frederick William IV. The three-storey rotunda was crowned with lookout tower. The outer walls have been adapted for the defense rifle infantry and light field artillery. Around the building was equipped with an earthen embankment and a moat.

In the late nineteenth century, the fort were carried out electrical and telegraph network. The fort was fully staffed for a hundred people.

During the First World War fortress began to lose its importance in the interwar years, he went to the German Navy. During World War II, the fort was rebuilt and equipped with the latest technological advances. There functioned electricity, heating, radar, radio and telephone. Around the fort's guns were installed.

After the war, the fort was adopted by Russian soldiers. In 1992, there was a point equipped with air surveillance and communications of Soviet ships. Currently, the building is being renovated, there is a small museum operates. In addition, the fort gradually began to serve as a cultural space of the city.

When you visit you should pay attention to the pillars on which preserved steel wheels drawbridge. At the entrance to the castle, you can see the door, set for the protection against chemical weapons after the First World War.

Visitors can also see an exhibition of contemporary painting, photography, sculpture. The castle hosts music concerts, poetry readings, historical tournaments.