Complex sentence: The synagogue was built between 1899 and 1900 in moorish style, designed by architect Wilhelm Stiassny, used until 1939 by the local Jewish community, that was almost totally wiped off during the Shoah.
Split into simpler sentences: The synagogue was built between 1899 and 1900 in moorish style, designed by architect Wilhelm Stiassny. It was used until 1939 by the local Jewish community, which was then almost totally wiped out during the Shoah.