An Orthodox Jew reads from his prayer book as he enters the Old City of Jerusalem through Jaffa Gate. Sacred to Jews, Christians and Muslims, the Old City boasts a shared and continued history of over 30 centuries. The total size of this holy and hotly contested city is roughly only 1 square kilometre, encircled by 4 km of stone walls, with 7 useable gates. With no borders or barbed wire, over 45,000 Muslims, Jews and Christians peacefully co-exist within these walls.