Among the Jewish artefacts is a 17th Century candlestick from the synagogue in Ostróg. The upper and lower parts of the candlestick resemble the shape of a helmet, containing small c-shaped arcs which, when joined together, form an openwork braid. The central part is hexagonal, also ribbed with arcs, filled with coloured glass. It is on display in the Reserve's tourist museum, located in the Ostróg Princes Castle.