The church centerpiece is the shrine of Our Lady of the Holy Rosary of La Naval, sculpted in the 18th century by a Chinese artist, who later converted to Christianity. It is said to be the oldest Marian icon in the country. Her oriental features make Our Lady of the Most Holy Rosary a uniquely indigenous Virgin.
She is called the Nuestra Señora del Satissimo Rosario de la Naval de Manila in Spanish; in Filipino: Ang Mahal na Ina ng Santo Rosaryo ng La Naval de Manila.
The image of the Blessed Virgin Mary is venerated in the Philippines because devotees believe that she interceded during the Protestant Dutch invasion in the Battle of La Naval de Manila in 1646, just as she ensured victory for allied Christian forces, in the Battle of Lepanto of 1571, against the Islamic Ottoman Empire.