Jerusalem has some significance for Christians as that is where Jesus was crucified but really it is just a city there is nothing holy or important about Jerusalem for Christians. There is nothing important about going there.
Jerusalem is where Islam's third most holy site, The Mosque of Al-Aqsa, is located. For Jews, Jerusalem is important because it is the site of their holiest place, the temple mount. For Christians it is important because Jesus was crucified, buried and rose from the dead in Jerusalem. Muslims, Jews and Christians all come to Jerusalem on pilgrimages to see it.
It is Jerusalem
The "holy cities" of Judaism and Christianity is Jerusalem. Jerusalem is important to Christians because it is the city in which Jesus was born. Jerusalem is important to Jews because of the great temple that was built in Jerusalem. The "holy city" of Islam is Mecca, where the Islamic people do their "pilgrimage".
You probably mean the Crusades.
The official place of worship for Christians is the church. The Jews worship in a synagogue.
There are several Christian holy sites in Jerusalem. Probably the most important is the Church of the Holy Sepulchre, but there is also the Via Dolorossa, Golgotha, Mount Zion, Tomb of the Virgin, Grotto of Gethsemane, the Chapel of the Ascension, and the Armenian Patriarchate in Jerusalem at St. James Cathedral.There are two major important Islamic holy sites in Jerusalem, Masjid al-Aqsa and the Dome of the Rock Shrine.The Dome of the Rock Shrine covers the area of the Former Jewish Temple and therefore has tangential significance to Christianity, but Christians do not usually go there when they make pilgrimages to Jerusalem. Otherwise, the two religions share no holy sites in Jerusalem.
Christians believe that Jesus was crucified in Jerusalem. The crucifixion of Jesus and Holy Week is the most important time in a Christian's timeline.
The Muslim Empires Conquered Jerusalem which was considered Holy to the Christians also.
AnswerSaladin recaptured Jerusalem from the Christians in 1187.
Christians do not pray to anything that faces Jerusalem.
It is the Resurrection Church or Catedral and other sites.
If they want to. I don't believe that it is mandatory.