Messages from 1983 to 1990[2] have been officially published and miracles, conversions and healings are said to occur in the Sanctuary of Our Lady of the Rosary of San Nicolás in Buenos Aires, Argentina, built especially for the veneration of Mary.

A century later, an Argentinian lay woman, Gladys Quiroga de Motta, reportedly received a number of private revelations from the Virgin Mary beginning on 25 September 1983, a date now commemorated as the feast of Our Lady of the Rosary of San Nicolás.

Every September 25, the city of San Nicolás hosts hundreds of thousands of pilgrims and faithful who meet to venerate and honor the statue of Our Lady of the Rosary of St Nicholas.

The 24-metre (79 ft) diameter dome, comprising a vertical arrangement of 64 sections of reinforced concrete faced on the exterior with copper plating, is visible from many locations in the city.

He acknowledged a collaboration with Monsignor Domingo Salvador Castagna|es, Marie Helene Sutter de Gall, and Father Carlos Pérez, the priest in whom Gladys Motta confided her spiritual experiences.

In 1994, the historian Cayetano Bruno|es from the nearby city of Rosario seat of the Archbishop Metropolitan of the suffragan diocese of San Nicolás published his "History of the Manifestations of Our Lady of the Rosary of St Nicholas" compiled from testimonies and official records kept in the archives of the Sanctuary.