Velankanni is a panchayat town in Nagapattinam district in the Indian state of Tamil Nadu. The Basilica of Our Lady of Good Health church can be traced to the mid-16th century and its founding is attributed to three miracles: the apparition of Mary and Jesus to a slumbering shepherd boy, the curing of a lame buttermilk vendor, and the survival of Portuguese sailors assaulted by a violent sea storm. It is built in the Gothic style, was modified by Portuguese and then further expanded later on due to the influx of pilgrimages