The Rosary Basilica is the third of the churches to be completed on the site. It was designed by architect Leopold Hardy and completed in 1899. It was consecrated in 1901 and has a capacity of 1,500 worshippers. Its style is influenced by Byzantine architecture. In 2006-7 the interior and exterior of the basilica were extensively renovated and the mosaics were restored.
Nave
The nave is open and circular, surmounted by a dome. The dome contains sixteen circular stained glass windows. The fifteen spaces between these windows signify the fifteen decades of the traditional rosary. The nave is surrounded by fifteen smaller side chapels, one for each of the traditional Mysteries of the Rosary. On the left of the nave are found the Joyful Mysteries; in the centre behind the sanctuary are the Sorrowful Mysteries, and to the right are the Glorious Mysteries. Each side-chapel comprises a large mosaic with a central image depicting the theme of that Mystery, and an inscription in Latin. Incorporated within the larger image may be smaller images of related themes. For example, the side chapel directly behind the altar contains a depiction of the Crowning with Thorns, which is surmounted by an image of the Ark of the Covenant. Most of the mosaics bear a date of around 1900. In each side-chapel is a small altar bearing six candles. In the upper wall of the sanctuary is a mosaic depicting Mary with outstretched arms and the caption Par Marie à Jésus. This depiction, of a very young woman facing directly forwards, is much more in keeping with Bernadette's descriptions of the apparition than the iconic statue in the niche in the Grotto. The exterior of the dome is surmounted by a dramatic gilded crown and cross, which were a gift from the People of Ireland in 1924. The cross was regilded in 2000-2.
Façade
The Rosary basilica has a semicircular white marble entry facade, depicting Mary handing the Rosary to St. Dominic. In 1941, the white marble side doors of the basilica were engraved with a message of gratitude to Marshal Philippe Pétain, who visited Lourdes in 1941 and allowed the Church to reclaim ownership of the Domain. In translation, this inscription read: The exterior facade of the basilica has been modified in 2007 to include mosaics depicting the Luminous Mysteries, which were added to the traditional fifteen mysteries by Pope John Paul II in 2002.
