We visited Rome several years ago and by chance walked into a cathedral with a stunning ceiling. It was obviously painted to appear as though you were looking up at the sky, through clouds into heaven with angels hovering above. There was a 3D effect to the painting that we found amazing. I am returning to Rome this summer and would like to visit this church again but I do not recall the which cathedral it was. It was within walking distance of Piazza Navona and the Vatican. I am wondering if anyone would recognize what I am talking about and be able to tell me the name of this cathedral.