The Church of the Holy Sepulchre in Jerusalem marks the place where Jesus died and was buried; and then resurrected from the dead. This is probably them most Holy site in Christianity. Another important site is the Church of the Nativity in Bethlehem, which is on the site where it is believed Jesus was born.
The main site shared Holy by these three religions is Jeruselum.
Christianity is holy as god is holy and we are his children.
The site of the Holy Temple in Jerusalem. We worship at the Western Wall which is adjacent to it.
There are several "holy cities" for Christians. Many are in the Holy Land: Jerusalem, Nazareth, and Bethlehem, to mention a few. For Catholics, Rome is a Holy City. For many Protestant Christians Augsburg is considered a significant site, and many of the central cities of the Reformation are considered to be preeminent.
== Mecca.
Yes. The holy book of Christianity is the Bible.
Islam, Judaism, and Christianity all have most of their holy sites located in the Middle East.
The Holy Bible.
The Holy Bible
Palestine
Actually all three claim it as their holy city the Jews, christians and also Muslims do claim it as theirs.