Solution:St. Thomas Cathedral Basilica is a minor basilica of the Catholic Church in India, that is located in Madras (Chennai), in Tamil Nadu.• The present structure dates to 1523 AD, when it was rebuilt by the Portuguese, over the tomb of Thomas the Apostle, one of the Twelve commissioned by Jesus Christ.
• It is one of the only three churches of the apostolic age of ancient Christianity: the other two being the St Peter's Basilica in Vatican City and Santiago de Compostela Cathedral in Galicia, Spain.