Is it Freudian? Or is it me?

Last night, for want of anything better to do, I was flipping channels and saw some kind of travelog.  And something struck me odd, maybe because I write erotic fiction.  But have you noticed that any time there's a domed building, there's always something perched right on the very tip top of it?

Is it me, or is this a very Freudian thing men have to recreate a breast with a nipple?