On the two feast days of St Peter, the feast of his chair on February 22nd, and the principal feast on June 29th, special decorations are put up in the Vatican Basilica. (This was formerly done also on the feast of St Peter’s Chains on August 1st, and on January 18th, back when there were two feasts of Peter’s Chair.) The bronze statue of the Apostle attributed to Arnolfo di Cambio (1240 - 1310 ca.), made in all likelihood for the Jubilee of 1300, is dressed in pontifical robes similar to those formerly worn by the Pope. Here is the statue as it normally appears; the feet are famously worn down by the constant kissing and touching of the faithful.
And here it is “dressed” for the feast day today.
The altar is decorated with two bronze statues of Saints Peter and Paul, donated to the Vatican Basilica by the family of Pope Urban VIII Barberini in 1692.
The enormous sculpture of St Peter’s Chair by Bernini at the back of the Basilica is covered with candles. Here we see the Chair as it normally appears, in an older photograph that also shows the former altar of the Cathedra beneath the sculpture.
Image may be NSFW.
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The Cathedra as it appears on the feasts of St Peter’s. (Decorating it in this fashion must have been a rather messy business before the modern electric lights which we see here.)
Two other views, the second of which also shows the modern altar, which in the reign of Pope Benedict replaced an earlier (and comically ugly) free-standing altar installed in this same part of the Basilica.
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Two other views, the second of which also shows the modern altar, which in the reign of Pope Benedict replaced an earlier (and comically ugly) free-standing altar installed in this same part of the Basilica.
Image may be NSFW.
Clik here to view.

This is not the place to explain in detail the much-discussed question of the authenticity of the throne itself; suffice it to say that as it exists today, it now known to be largely a work of the ninth century, given to the Pope by the Emperor Charles the Bald in 875. On the other hand, the ivory panels on the front of the chair are much older, although it is impossible to say how much older; they may have been removed from another chair which was earlier regarded as a throne of St Peter. It may be supposed that if these panels were incorporated into the Carolingian chair from a much older object, there was a very good reason for doing so. In any case, whether or not any part of it was once used by St Peter, it may be venerated as are other relics of uncertain authenticity, such as those of Christ’s Crib at St. Mary Major, as a kind of icon in three dimensions. (Pictured below, the original chair in an image made during the exposition in 1867.)
Image may be NSFW.
Clik here to view.

Clik here to view.
