Why is the Western Wall also called the Wailing Wall?

The Western Wall is the holiest shrine of the Jewish world. The Western Wall is part of the retaining wall supporting the temple mount built by Herod in 20 B.C. After the destruction of the Second Temple in 70 A.D., Jews were not allowed to come to Jerusalem until the Byzantine period, when they could visit once a year on the anniversary of the destruction of the Temple and weep over the ruins of the Holy Temple. Because of this, the wall became known as the “Wailing Wall.”