Mouse over an opponent's name in the scores panel at bottom right of the screen. This brings a popup at bottom left, at the foot of which the espionage icon is shown followed by two values,
their EPs against you, then your EPs against them.
This happens using the BUG mod: I can't remember playing without it, and it is brilliant.
Also using BUG there are lots of sub-screens in the Domestic Adviser, some of which say what buildings are in which cities (using the building icons, not names). Without BUG, I think the most you can find is a list in the statistics sub-screen under "Information", but that just shows that you have, for example, seventeen courthouses and does not say where they are.