The route follows an ancient tradition that St. Philip Neri promoted in 1540 recieving the pope's blessing during the jubilee of 1575.
It revolves around an image of Our Lady found in the Basilica of St. Mary Major.
It is located on one of the seven hills of the Eternal City; and for 300 years it was a cemetery for Rome's Jewish community.
The 40-minute virtual tour gives a historical and archaeological presentation, available in six languages.