Velankanni is a panchayat town in Nagapattinam district in the Indian state of Tamil Nadu. It lies on the Coromandel Coast of the Bay of Bengal, 350 km south of Chennai (Madras) and 12 km south of Nagapattinam.
Once a port that traded with Rome and Greece,the tiny commercial center gradually lost its importance to the larger city of Nagapattinam. The Basilica of Our Lady of Good Health is located at the small town of Velankanni in the state of Tamil Nadu in southern India. The Roman Catholic Latin Rite Basilica is devoted to Our Lady of Good Health. Devotion to Our Lady of Good Health of Velankanni can be traced to the mid-16th century and is attributed to three miracles at sites around where the Basilica stands: the apparition of Mary and the Christ Child to a slumbering shepherd boy, the curing of a lame buttermilk vendor, and the rescue of Portuguese sailors from a violent sea storm.
The chapel was finally built by Portuguese sailors. More than 500 years later, the nine-day festival and celebration is still observed and draws nearly 2 million pilgrims each year. The Shrine of Our Lady of Vailankanni, also known as the “Lourdes of the East,”is one of the most-frequented religious sites in India.