We visited as part of a tour group, after visiting Ephesus & were fortunate that it wasn't crowded. Although we'd previously been to Ephesus, we'd not been to 'The Virgin Mary's House' before.
There's an information board, at the entrance, explaining various facts, including that it's been rebuilt over older foundations, so that what we see today, dates back to the 1st & 4th centuries A.D., plus a bit more restoration in the 7th century & then 1951.
It's thought that St. John, having been entrusted by Jesus, to take care of Mary, brought her to Turkey to escape the Christian persecutions; this is borne out by the presence of St. John's tomb in Ephesus & the 1st basilica, in the world, dedicated to the Virgin Mary.
Apparently, Anne Catherine Emmerich, a bedridden Augustinian nun in Germany (1774–1824), had visions of this house, which led to its discovery. Several Popes have visited to bestow blessings & there is an annual pilgrimage day of 15th August.
You can't take photos inside the chapel / house but there is a photo of the altar outside, so I photographed that.
There is a natural spring & one can drink, or fill bottles from the tap, or buy bottles, of various sizes, in the gift shop.
There's a long line of written prayers in the gardens. People write little notes & tie them on with any means possible, in the hope of being heard. One can light candles, outside, for loved ones.
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