The first church building was constructed in 1972, and it was later enlarged. Mother Mary, holding the infant Jesus in her arms, is said to have appeared in the late Rev. Fr. P. T. Arulappa's dream, which inspired the construction of this church to honour Our Lady of Good Health. The imposing 97-foot belfry was dedicated in 1972 by the then-chief minister of Tamil Nadu.
Our Mother's apparitions in Vailankanni in the 16th and 17th centuries inspired the construction of this shrine. 

The Basilica is constructed in the Gothic architectural style. In 1928, the Southern side was enlarged, and in 1933, the Northern side. Our Lady's Tank, Church Museum, Priests' Residence, Offering Center, Stations of the Cross, Stations of the Rosary, Shrine Mega Mahal, and Velankanni Beach are all located within the Shrine Basilica. Except for the roof, which is composed of red tiles, the building is painted white.

• Mother Mary's Square: You can visit Mother Mary's Square, which was built in 2003 to commemorate the Catholic Church's recognition of the Blessed Mother's four apparitions.
• Adoration Chapel: In the quiet ambience of the Adoration Chapel, one might pray, relax, or think. Every day of the week, from 7 a.m. to 8.30 p.m., it is open to all devotees.
• The Grotto: Built-in 2002, it represents the three apparitions of Our Lady of Good Health that occurred in Velankanni. According to local custom, you might donate sarees to the Blessed Mother as a form of thanksgiving.
• Museum: You can visit the Museum, which is a manifestation of the marvels conferred by the Blessed Mother's tremendous intercession. The different items on display are reproductions of the offerings presented by devotees to Mother Mary to express their gratitude. 

• One should follow the rules implemented by the authorities and respect the beliefs of others.
• At six o'clock in the evening, you can attend Novena Prayers, Rosary, and Evening Prayers.

• Throughout the year, devotees can pay a visit to Annai Vailankanni Shrine.
• The greatest time to visit the Shrine is between the winter months of November to February, when the temperature ranges between 25 and 30 degrees Celsius, thanks to Chennai's tropical wet and dry climate.

• Morning Star Church for Our Lady of Vailankanni 
• Pongu Sani Temple, Thirukollikadu Road, Keeralathur, Tamil Nadu
• Velankanni Beach