Built in 1761, the Łańcut Synagogue is one of the finest surviving historical synagogues in Poland — a country that once had thousands and now has very few. The exterior is modest, tucked into the old Jewish quarter near the castle grounds, but the interior is extraordinary: the painted walls and ceilings, restored after wartime damage, show elaborate decorative schemes of animals, plants, and Hebrew inscriptions in the tradition of 18th-century Polish-Jewish folk painting.
The Jewish community of Łańcut was substantial before the Second World War — roughly a third of the town's population. Almost none survived. The synagogue itself was used as a warehouse during the German occupation, which paradoxically preserved it from demolition. It is now a branch of the castle museum and functions as a small memorial and exhibition space. Seeing it in the shadow of the Potocki palace — the two institutions that defined this town for centuries — makes the afternoon in Łańcut something more than a simple castle visit.