<Tr> <Td> Excavators' Gate </Td> <Td> </Td> <Td> </Td> <Td> Excavation Gate . (Eastern gate of the main Umayyad palace, attributed to Caliph Al - Walid I (705 - 715). Destroyed by an earthquake around 749, walled up to support Ottoman wall (1537--41), reopened and rebuilt by archaeologists led by Benjamin Mazar and Meir Ben - Dov in 1968 .) <P> </P> </Td> <Td> 705--15, 1968 </Td> <Td> Wall south of Al - Aqsa Mosque </Td> </Tr> <Tr> <Td> Dung Gate </Td> <Td> Sha'ar HaAshpot <P> שער האשפות </P> </Td> <Td> Bab al - Maghariba <P> باب المغاربة </P> </Td> <Td> Gate of Silwan, Sha'ar HaMugrabim </Td> <Td> 1538--40 </Td> <Td> East of southern side </Td> </Tr> <Tr> <Td> Tanners' Gate </Td> <Td> Sha'ar HaBursekaim <P> שער הבורסקאים </P> </Td> <Td> </Td> <Td> </Td> <Td> 12th century </Td> <Td> East of southern side </Td> </Tr> <Tr> <Td> Zion Gate </Td> <Td> Sha'ar Tzion <P> שער ציון </P> </Td> <Td> Bab al - Nabi Da'oud <P> باب النبي داود </P> </Td> <Td> Gate to the Jewish Quarter </Td> <Td> 1540 </Td> <Td> Middle of southern side </Td> </Tr>

When was the old city of jerusalem built