Herod's most famous and ambitious project was the expansion of the Second Temple in Jerusalem. Herod's rebuilding of the Second Temple in Jerusalem was done so that he would have a capital city worthy of his dignity and grandeur and with this reconstruction Herod hoped to gain more support from the Jews. Recent findings suggest that the Temple Mount walls and Robinson's Arch may not have been completed until at least 20 years after his death, during the reign of Herod Agrippa II.