The Choral Synagogue (Yiddish: Khorshul, also known as "The Zabłudowskis’ Synagogue") was located on Białówny Street (formerly Żydowska Street). It was erected in 1834 on the initiative of Marek Zamenhof, father of the creator of Esperanto, Ludwik. The Zabłudowski family were major sponsors of this 2-storey masonry building with a double-pitched metal sheet roof. The name “Khorshul” refers to the choir which was introduced to the sumptuously decorated interior of the synagogue towards the end of the 1850s[1.1]. The exterior of the building was modest, with distinctive semicircular windows of the prayer halls. In the interwar period it was second in size and significance amongst synagogues in Białystok. The Choral Synagogue was burnt down in 1943 during liquidation of the ghetto.
