Rotunda and Aedicule
The Rotunda is located in the centre of the Anastasis, beneath the larger of the church's two domes. In the centre of the Rotunda is the chapel called The Edicule, which contains the Holy Sepulchre itself. The Edicule has two rooms. The first one holds The Angel's Stone, a fragment of the stone believed to have sealed the tomb after Jesus' burial. The second one is the tomb itself.
Under the status quo, the Eastern Orthodox, Roman Catholic, and Armenian Apostolic Churches all have rights to the interior of the tomb, and all three communities celebrate the Divine Liturgy or Holy Mass there daily. It is also used for other ceremonies on special occasions, such as the Holy Saturday ceremony of the Holy Fire celebrated by the Greek Orthodox Patriarch of Jerusalem. To its rear, within a chapel constructed of iron latticework upon a stone base semicircular in plan, lies the altar used by the Coptic Orthodox.
Beyond that to the rear of the Rotunda is a very rough hewn chapel, containing an opening to a rock-cut chamber, from which several kokh-tombs radiate. Although this space was discovered recently, and contains no identifying marks, many Christians believe it to be the tomb of Joseph of Arimathea in which the Syriac Orthodox celebrate their Liturgy on Sundays. To the right of the sepulchre on the southeastern side of the Rotunda is the Chapel of the Apparition which is reserved for Roman Catholic use.
Read more about this topic: Church Of The Holy Sepulchre