Basilica
Some basilicas are built because a miracle or special sign took place. The sign might be a vision and might give a plan to build.  The Basilica of Lourdes in France is built at the place where Bernadette Soubirous had a vision of the Virgin Mary. It is an important pilgrimage place.  Sometimes the sign is not so strange as a vision. In the Philippines, the Basilica del Santo Niño was built at the place where a partly burnt box was found in 1565. It contained a little statue of the Christ Child and had been left behind by some Spanish or Portuguese explorers many years earlier. "Santo Niño" means "Holy Child" in Spanish.