Unidentified Earth 51

I dunno, folks, is there any interest in me continuing this series? I didn't do one last week, but there are no guesses at all for the last two installments, UI 49 (for which one might want to follow some evidence) or UI 50 (for which one might require the services of an engineer with lots of, oh, imagination).

Anyway, here's one that really ought to be pretty easy:



Where are we? Rot-13 the guesses....