An unusual point of view..
duomo in Florence is pretty much visible from anywhere along the edge of town. Even in town, if the street is aligned correctly, the duomo is always within eyeshot. There it sits, in the middle of town, set in the center of a plain, surrounded by hills. Pretty much omnipresent, from any angle.
In Rome however, the cupola of St.Peter’s is not that present, for the most part. You’ll certainly see it more often while walking some streets of Roma papalina (lit. the Pope’s Rome, aka the historic center). However, leave that flood plain area and the cupolone (big dome), as it’s affectionately called by Romans, pretty much disappears.
There are just too many hills in the way, the river has too many bends precluding straight lines of sight, and the basilica itself is perched upon a hill, set back a ways from a crook in the river. Besides the well known perspectives such as from Castel Sant’Angelo, you basically don’t see it much at all.
So when it does pop out between buildings while you’re running around town, or you catch a glimpse of its lantern through an acqueduct in Villa Pamphili, it’s definitely unexpected. It really shouldn’t be, of course.. at almost 500 feet from basilica floor to the top, it is after all the tallest dome in the world. That said, it’s hard in those moments not to think, “Hey, who knew you’ld turn up here?!”
And as for when you catch a glimpse of it, in town, with sheep in the foreground? Well.. how about everyone leaves their reaction to that in the comments section?