I've always wanted to visit Loreto. My mother was named after the shrine.
I've been there twice. It's an awesome experience. There are deep ridges grooved into the marble step that surrounds the Holy House, made by the thousands of pilgrims that circled the house on their knees, over the centuries.
"From the latter half of the sixteenth century, the devout Loreto tradition involves numerous religious, artistic and literary manifestations, and the Holy House of Loreto became the destination of pilgrimages and a spiritual and cultural centre of the most important and noteworthy of Europe.
The unanimous tradition declares that the sacred chapel of Loreto is the same in which the Virgin Mary was born , received the annunciation from the angel and conceived the Saviour by the miracle of the Holy Spirit. The Pope accepts without doubt that which is contained in the hagiographical tale, in agreement with that which had been previously written by Pope Julius II in 1507 about the events which took place in the Nazarene house before the Assumption of the Virgin. He doesn't mention any of the various translations, but simply declares that the holy chapel was moved by angelic ministry to the Loreto church."
You can view a video of the Sanctuary at this link: