The main nave of the Klausen Synagogue houses the first part of the exhibition, Jewish Customs and Traditions, which deals with weekday services, the Sabbath and festivals. You are first acquainted with the basic characteristics and sources of Judaism, i.e. the Hebrew Bible and the Talmud. In the central space – the area of the original bimah (platform) - is displayed an unwrapped Torah scroll (the Five Books of Moses), the reading of which forms the most important part of synagogue liturgy. The scroll is accompanied by its usual appurtenances – pointer, mantle, binder, shield and finials. The vitrines in the central section contain prayer books and ritual items used during weekdays and on the Sabbath (prayer shawl, phylacteries, head covers, candles, spice boxes). A prominent feature of the east wall is the Baroque Holy Ark , in which wrapped scrolls of the Torah are kept.
The area near the Holy Ark is set aside for the synagogue and its appurtenances, which include, in addition to the above mentioned items, a curtain and valance. Special attention is placed on highlighting the symbolic relationship between the synagogue and the Temple of Jerusalem. The vitrines around the perimeter of the hall feature the High Festivals (New Year, Day of Atonement) and the Pilgrim Festivals (Pesah, Shavuot, Succot, Shemini Atzeret and Simhat Torah). Use has been made primarily of manuscript and printed books and rare synagogue curtains for the presentation of subject matter. The intimate space under the west gallery is dedicated to the most important fasts and religious ceremonies, Hanukkah and Purim. Particularly worthy of mention is the collection of Hanukkah candelabra and Esther scrolls.