Old New Synagogue - Credit: Wikimedia Commons
The Old New Synagogue (; ), also called the Altneuschul, situated in Josefov, Prague, is Europe's oldest active synagogue.The Scolanova Synagogue in Italy, also 13th century, was converted to a church by 1380 but was restored to synagogue use in 2006. It is also the oldest surviving medieval synagogue of twin-nave design. Read more on Wikipedia
Source: en.wikipedia.org