What, then, would one find inside such an archetypical ‘Polish’ synagogue? The centre of the main hall would certainly be occupied by a bimah – a tradition that dated back to the Mediaeval Sephardic philosopher Maimonides (1135-1204) and which came to define the interior of Ashkenazi synagogues. Confirmed by the 16th-century Kraków rabbi Moses Isserles Remah, the rule had an important impact on the architecture of Polish synagogues from 16th to the 18th centuries. As the Piechotkas assert, the internal views afforded by this arrangement were very striking and quite far from anything suggestive of a church.
The earliest Polish synagogues had a free-standing bimah surrounded by a balustrade, iron bower or kiosk-arbour. (Such bimah-bowers can be found the Old Synagogues in Kraków and Pińczów, as well as the non-extant Golden Rose Synagogue in Lwów.) Very soon, however, a new development transformed the interior of Polish synagogues.
Starting in the second half of the 16th century, the bimah was more and more often surrounded by four piers. This kind of bimah structure, which appeared to support the ceiling, was then transformed into what is known as the bimah-tower. One of the earliest synagogues to feature this new development was likely the Maharshal Synagogue, built in Lublin in 1567. Other known bimahs of this kind include those in Przemyśl, Tarnów and Rzeszów.
The appearance and evolution of bimah-towers in Eastern European synagogues has been linked to the wave of Hasidic mysticism that arose in 17th-century Poland – a tradition which would subsequently transform Ashkenazi Judaism. The Zohar, the founding work of the Kabbalah, played an important role here. According to this mystical school of thought, the illuminated bimah-tower was the source from which the holy words of the Lord emanated.
The scholar Thomas Hubka states that this could have been inspired by the Kabbalistic depictions of the heavenly palaces of the Lord. As he argues, these often included a vision of halls with a column in the centre – a channel which served as a means of communication for ascending and descending souls, prayers and supplication.
The 17th century also saw the rise of another spatial plan which transformed Polish synagogue architecture. This was the so-called nine-bay plan, where the four columns or piers in the centre divided the square hall and ceiling in a plan of nine bays. The four supporting piers allowed for much bigger synagogues to be built. The greatest of these were in Rzeszów (New Town Synagogue), Łańcut, Pinsk and Lviv (Suburban); the latter two were destroyed.