
Two-storey brick battery building. On the upper floor there are three casemates, of which the outermost ones once served as the location of guns, and the middle one was used as a consumable powder magazine. At the time of the photo, they are locked.
The entrances to the casemates are fenced off from the land by a deep moat, through which metal bridges are thrown. These bridges can be quickly removed if necessary, and the ditch will become the last line of defense. Also, from the moat you can get into the premises of the lower floor.