Ciborium in the Basilica of Saint John Lateran (Rome) - Catholic Stock Photo

In ecclesiastical architecture, a ciborium ("ciborion": κιβώριον in Greek) is a canopy or covering supported by columns, freestanding in the sanctuary, that stands over and covers the altar in a basilica or other church. It may also be known by the more general term of baldachin, though ciborium is often considered more correct for examples in churches.

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The Cathedral of the Most Holy Savior and of Saints John the Baptist and John the Evangelist in the Lateran (Italian: Santissimo Salvatore e Santi Giovanni Battista ed Evangelista in Laterano), also known as the Papal Archbasilica of Saint John [in] Lateran, Saint John Lateran, or the Lateran Basilica, is the cathedral church of the Diocese of Rome in the city of Rome, and serves as the seat of the bishop of Rome, the pope. While situated in the City of Rome, the archbasilica lies outside of Vatican City proper, which is located approximately 4 kilometres (2.5 mi) to its northwest. Nevertheless, as properties of the Holy See, the archbasilica and its adjoining edifices enjoy an extraterritorial status from Italy, pursuant to the terms of the Lateran Treaty of 1929.

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