Many dispute the modern scientific tests that have proven it to be a medieval fabrication, and crowds of faithful and merely curious still visit its black marble chapel, a masterpiece of Guarini's High Baroque, with its cone-shaped, six-tiered dome formed by a web of intersecting arches that rise to a 12-pointed star.
Many disagree with the results of the scientific tests which have shown that it is a falsehood from the medieval era. 