In the entire world, three churches only built over the tomb of an Apostle of Jesus Christ
The Basilica of Saint Peter built over the tomb of St.Peter in Rome.
Cathedral of Santiago de Compostela built over the tomb of St.James in Spain.
Basilica of the National Shrine of St.Thomas built over the tomb of St.Thomas. Basilica of the National Shrine of St.Thomas is in Chennai, India.