ENThe article presents a small town Połoneczka (presently, in Belarus Republic), its artistic heritage and historical monuments related to the Radziwiłł family – one of the most important families of The Grand Duchy of Lithuania. The local palace with an impressive library and art collection was one of the most important centers of cultural and artistic life in Lithuania in the late 18th and 19th centuries. Of interest is also a wooden parish church with baroque altars, redesigned in 1897 in a neogothic style by a Warsaw architect Konstanty Wojciechowski. This text also discusses an interesting case of using Roman Catholic church by the Uniate worshippers and priests. The founder Maciej Radziwiłł provided suitable liturgical vestments and vessels for both Uniates and Roman Catholics. This is an interesting example of friendly coexistence of these rites.