This church is amazing. It was built over part of the Roman baths by Michelangelo. After he died, Bernini worked on it. There was a timeline in the baths which Michelangelo left and incorporated into the church. When the Vatican changed out the paintings that were deteriorating over the ages with mosaics, they stored the paintings in this church. Of course no cameras are allowed to preserve the paintings as much as possible.
There were 7 angels and 7 martyrs. Go during the daylight...difficult to see at night by candlelight. Open until 7 p.m.