The word synagogue means “assembly” in greek and is Jewish or Samaritan house of prayer. Synagogues have a large hall for prayer with an ark holding the Torah scrolls and can also have smaller rooms for book keeping. Some have a separate room for Torah study, called the “Beit Midrash”.
During the 19th and early 20th century, it was fairly common for Jewish communities, particularly in Europe, to construct very large synagogues.
WORLD’S LARGEST SYNAGOGUES:
.The largest synagogue in the world is probably the Beltz Great Synagogue, in Jerusalem, Israel, whose main sanctuary seats 6,000.