The Santuario della Madonna del Divino Amore has become a significant pilgrimage site for Catholics. Its fame comes from a painting of the Virgin Mary that many people believe has miraculous powers.
The sanctuary's special reputation began in 1740. According to tradition, a traveler found himself in serious danger when a pack of wild dogs attacked him. In desperation, he called out to the image of the Virgin Mary nearby. Miraculously, the dogs became calm, and the traveler was unharmed. This event was considered the first miracle associated with the site.
During the Second World War, the famous image was moved to the safety of Rome. Many believe that this act protected the city itself from destruction. Grateful for what was seen as the Virgin's intervention, the people of Rome made a vow to build a new sanctuary in her honor. The Santuario della Madonna del Divino Amore stands today as a symbol of that promise and continues to draw visitors and pilgrims from around the world.
Source - https://en.wikipedia.org/wiki/Santuario_della_Madonna_del_Divino_Amore