EN
Architectural form of non existing synagogue in Koniecpol did not stand out among a large group of i9th-century neoclassical synagogues in former territory of Polish Commonwealth. But, because of a smali amount of research materiał (most of i9th-century synagogues vanished during ii w w and the Communist period) the possibility of reconstruction its architectural form can be helpful in In the study of Jewish architecture. So far in the scientific literaturę an opinion existed, that the synagogue in Koniecpol was erected in the mid nineteenth century. Insightful research has led to the correction of this information and moved the moment of the synagogues founding in its finał form to the nineties of the nineteenth century By conducting a comparative analysis of other synagogues with the spatial arrangement and architectonic decoration similar to the synagogue in Koniecpol, located in the Southern part of Congress Poland we can mark a linę of development of the type of a synagogue with longitudinal section and a faęade in the form of a portico. It also led us to determine the original pattern, which turned out to be a project created by Piotr Chrystian Aigner. The problem of classical motifs in synagogue architecture in this area has not been sufficiently studied, primarily because of the smali group of preserved buildings. Therefore, the following article is not only a monographic work of the history of the synagogue in Koniecpol. It constitutes a basis for researching the architectonic type, widely represented in the i9th-century synagogue architecture in the Polish lands.