This is the Roman Basilica of San Salvatore in Lauro - the Rome parish for people from the region of Marche, in Italy.
Today this parish is one of the most active and alive parishes in all of Rome. In the region of Marche is located the little town of Loreto, where the holy house of the Virgin Mary from Nazareth is located.
Each year on the 10th of December they celebrate the Solemnity of the Translation of the Holy House of Loreto (La Solemnita' della Traslazione della Santa Casa di Loreto).
All these magnificent candles were displayed and lit for the wonderful celebration.