Answer
In 1862, Bernadette's visions of the Virgin Mary at Lourdes were officially declared "worthy of belief" by the Catholic Church. This declaration followed a rigorous investigation by the local bishop, who examined the evidence and testimonies surrounding the visions. The Church's recognition of Bernadette's visions as credible played a significant role in establishing Lourdes as a major pilgrimage site and a center of Marian devotion.