In Israel and regions of the Jewish diaspora archaeologists have uncovered many ruins of synagogues from thousands of years ago. The small ruined synagogue at Masada is one of the most well-documented; it dates from the time of the Second Temple. Synagogues have also been discovered in Egypt and on the island of Delos which predate the synagogue at Masada.
The Dura-Europos synagogue (in today's Syria) is considered to be the world's oldest preserved Jewish synagogue.
The oldest active synagogue in Europe is the Alteneushul (Old-New Synagogue) in Prague, Czech Republic, which dates from the 13th century. During Kristallnacht on November 9-10, 1938, the Nazis in Germany and Austria destroyed or significantly damaged 1,574 synagogues, which included many of the greatest synagogues of Europe. Many were also destroyed or fell into disrepair during the Nazis' conquest of Europe, during which many Jewish communities were wiped out.