In the 18 century building of brick has become very popular in Kozelets and district. It was then, near the Church of the Nativity of the Virgin, in the modern park was constructed two-story brick building. A history of its construction is as follows. After Andrusovo armistice line between Poland and Russia laid on the Dnieper. On the Right Bank of the Russian Empire territories remained only Kyiv with surrounding areas along the river Irpen. Accordingly, it was necessary to seek a new location for the Kiev regiment. And in 1708, from a military-political considerations, management of the Kiev regiment was moved to the Dnieper to the nearest large town. They became Kozelec. Office of the First Regiment was located in an ordinary house. But almost simultaneously with the construction of the cathedral, from the same brick and was built for the office building in two floors with deep basements - suterenami. Construction, which continued intermittently 1756-1760's, began to own drawings AV Kvasov and finished, decorated with stucco facades IG Grigorovich-Barsky. By the middle of a rectangular volume adjoins the porch, over which is arranged an outdoor terrace, circled by an arcade of peculiar plump columns. Appointment of buildings modeled stresses heraldry in a triangular frame of arched windows on the ground floor. Simple, but surprisingly harmonious proportions in the structure is an outstanding monument of baroque civil architecture of the 18 th century on the Left Bank.