Ok ... I’m trying this again.
1) There is a city layout in the shape of a KEYHOLE in vicinity of Vatican.
From what you have been saying, it is my understanding that hoosiermama first reported seeing that and brought it to our attention, and NIKK helped with posting pix of it.
THEN
2) Cboldt found another source with the Knights of Malta property from which there are views to be had of the Vatican, at least one of which is a KEYHOLE.
(I agree with you NIKK, we have two different keyholes referencing Vatican)
THEN
3) Early Bird pointed out that there is a satellite or satellite program or equipment known as KEYHOLE, from which we hope and speculate, the white hats can document all kinds of things happening down here from space.
Just need to find which keyhole the key fits.