A view of scaffolding around a baroque sculpted bronze canopy by Gian Lorenzo Bernini over the high altar of St. Peter's Basilica in preparation for its restoration, at the Vatican

VATICAN CITY — The giant bronze-and-wood canopy in the middle of St. Peter’s Basilica is being gradually engulfed by scaffolding as Gian Lorenzo Bernini’s masterpiece gets its first major restoration since the mid-1700s.

The almost 30-meter-high canopy covers the high altar of the basilica, and was built on the spot where St. Peter, the first pope, is believed to have been buried after dying as a Christian martyr in the reign of Roman Emperor Nero (54-68 A.D.).