Our day in Napoli started out with a two hour tour and many churches.  This was the first church we visited, and it was very interesting because the building had originally been a palace.  When it became a church, the Jesuits decided to simply replace the inside and leave the outside.  What is even more interesting, is that on each pointed square that decorates the outside, there is a music note.  When played, these notes create a specific song (I forget what it is).  There were several chapels to different saints and, one more fun fact, an unexploded shell landed in this building during WWII, taking out the dome but leaving most of the church intact.  Visitors can see it in a side vestibule.  (taken 4.10.2014)