Our Lady of Lourdes Basilica, Poondi, is a Catholic pilgrimage centre located in Tamil Nadu, South India. Poondi is a small village located in Thiruvaiyaru Taluk (also spelled as Taluka), about 35 km away from Thanjavur.
Rev. Fr. Constantine Joseph Beschi S.J., an Italian Jesuit missionary, built the Church of Mary Queen of Immaculate Conception between 1714 and 1718. Poondi Madha Shrine was officially classified a Minor Basilica by Pope John Paul II on 3 August, 1999.
The present structure of the shrine has a mixture of Gothic and French architectural styles. The facade above the portico has a row of statues of the Twelve Apostles, St. Francis Xavier and Fr. Constantine Joseph Beschi. The church has a relic of the True Cross, believed to be the one on which Christ was crucified.