摘要:The article examines the problems of the city fortification of Sosnitsa in the 17th – 18th centuries. It was originated in the first half of the 17th century as a private Alexander Pisochinsky’s castle. In the middle of the 17th century Sosnitsa became one of the largest cities in Chernihiv region. For a while it was the center of Sosnitsky Regiment. In the 18th century, its fortifications were adapted for combat with artillery. Fortress of Sosnitsa was eliminated in the late 18th – early 19th centuries.