known to a large number of workshops, mainly Jewish. In 1938, the left bank of Ciechanowiec (then located in the district of Bielsko) was attached to the right part of the town (on the status of the settlement), previously located in the district of Wysokomazowieckie (in the municipality of Klukowo). During World War II, the city was badly destroyed, as a result of the Molotov-Ribbentrop Pact, first by the soldiers of the Red Army, and after June 1941 by the German Army. The Jewish population was almost completely exterminated at the Treblinka extermination camp. After the war, reconstruction lasted a long time and the city has not regained its former importance and population that it once had. Jewish family names like Ciechanowiec, Ciechanowiecki, Ciechanowicz, Ciechanowski and Chechanover originated from this town. Geography Ciechanowiec is located in eastern Poland about northeast from Warsaw and around west from the Białowieża Forest in the Territory of Preserved Landscape of the Valley of the Bug and Nurzec Rivers. The Nurzec River divides the town into two parts: the Left Side and the Right Side. Demographics According to the 1921 census, the village was inhabited by 3.291 people, among whom 1.568 were Roman Catholic, 39 Orthodox, 34 Evangelical and 1.649 Mosaic. At the same time, 1.653 inhabitants declared Polish nationality, 11 Belarusian, 21 German and 1.693 Jewish. There were 361 residential buildings in the village. Detailed data as of 31 December 2021: Monuments The Holy Trinity Church The monastery-hospital complex The Lord's Ascension Orthodox Church The Mansion-Park Complex Mazowiecko-Podlaski Open-Air Museum of Agriculture Notable people Alexander Chizhevsky Jan Krzysztof Kluk Benjamin Mazar (1906-1995), Israeli historian and archeologist; President of the Hebrew University of Jerusalem Ivan Solonevich (not native) References External links Ciechanowiec Online JewishGen Locality Page - Ciechanowiec, Poland from Museum of Jewish Heritage. Cities and towns in Podlaskie Voivodeship Wysokie Mazowieckie County Belsky Uyezd (Grodno Governorate) Białystok Voivodeship (1919–1939) Belastok Region Shtetls Holocaust locations in Poland