Unidentified Earth 16

Wow! Either this recurring feature has seriously dropped off in popularity, or I managed to come up with stumpers two weeks in a row, as last week's entry is as yet unidentified. In fact, no one even hazarded an actual guess! What's up with that? I might start giving hints, but for now, concentrate on the corners of the image there; they may help clarify the type of thing we're looking at.

And with that, it's time for this week's entry, which is admittedly quite a lot easier.



Where are we?

(Rot-13 your answers!)