December 7, 2011. (Romereports.com)
One of the last stones added to St. Peter's Square is found high above the plaza, in this mosaic of the Virgin Mary, with the words “Mater Ecclesiae,” inaugurated by John Paul II on December 8, 1981.
The idea came from a young man who asked the pope during an audience why
there were no images of the Virgin Mary in the square.
The mosaic was inspired by the oldest image of the Virgin Mary which is found inside St. Peter's Basilica.
The story behind the mosaic in St. Peter's Square