Jerusalem's centrality to Christianity is based on its teachings that Jesus lived, was buried, and was resurrected in this city. For starters, the entire Christian Quarter is replete with Christian history, including, for example, the Stations of the Cross along the Via Dolorosa. In terms of visiting Jesus's burial place, Catholic teachings claim the Holy Sepulchre to be the site, while still others, such as Baptist followers, consider it to be the Garden Tomb, just outside the Old City.
Another key Christian site is the Garden of Gethsemane, which, together with the Church of All Nations, house the site where Jesus is said to have convened with his disciples the night he was arrested. In addition, according to the Eastern Orthodox Church, this area is also where Mary Magdelene is buried.
Christian Jerusalem tours can also include Ein Karem, a biblical village, and home to the Church of St. John the Baptist. And in the whole of Jerusalem, there are many churches and other significant Christian sites.
To be sure, any Christian Jerusalem tours will also include Bethlehem, which thankfully is less than a 10-minute drive from Jerusalem, and houses the famous Church of the Nativity. A good example is the Jerusalem & Bethlehem tour that takes you through the holy history of both the Old City and Bethlehem.