The crucifix on the dome of the Church of the Holy Sepulchre, site of Golgotha, Jerusalem. Built during the reign of Constantine I in the 4th century CE.
Based on Wikipedia content that has been reviewed, edited, and republished.
Original image by Markus Bollen. Uploaded by Mark Cartwright, published on 21 December 2017 under the following license: Public Domain. This item is in the public domain, and can be used, copied, and modified without any restrictions.