After the destruction of the First Temple in Jerusalem by the Babylonians in 586 BCE, the Jews of the Kingdom of Judea went into exile. In 538 BCE during the reign of Cyrus the Great, the Jews returned to Jerusalem and were able to build the Second Temple on the site of the original one that had been destroyed. Secular accounts place the completion of the Second Temple in approximately 516 BCE but some Jewish sources date the completion much later in 350 BCE. Herod the Great rebuilt the Temple in 20-18 BCE. The Jews led a revolt and occupied Jerusalem in 66 CE initiating the first Roman-Jewish war. In 70 CE the Romans reclaimed Jerusalem and destroyed the Second Temple with only a portion of the western wall remaining (though recent archeological discoveries date portions of the wall to later periods). The Western Wall remains a sacred site for Jews.