Vatican unveils last of restored Raphael Rooms after 10-year cleaning

The Vatican Museums on Thursday unveiled the last and most important of the restored Raphael Rooms, the spectacularly frescoed reception rooms of the Apostolic Palace that in some ways rival the Sistine Chapel as the peak of high Renaissance artistry.

- BY NICOLE WINFIELD

A decade-long project to clean and restore the largest of the four Raphael Rooms uncovered a novel mural painting technique that the superstar Renaissance painter and architect began but never completed: the use of oil paint directly on the wall, and a grid of nails embedded in the walls to hold in place the resin surface onto which he painted.

Vatican Museums officials recounted the discoveries on Thursday in inaugurating the hall, known as the Room of Constantine, after the last scaffolding came down. The reception room, which was painted by Raphael and his students starting in the first quarter-century of the 1500s, is dedicated to the fourth-century Roman emperor Constantine whose embrace of Christianity helped spread the faith throughout the Roman Empire.