We're getting quite the backlog here, all of a sudden: no guesses on UI's 66 or 67, and 68 is still unidentified after one guess. Wow! If you worked at UI 66 during the 1960s and early 1970s, the names of Greek gods would have figured in a lot of your conversations. (To be fair, I don't actually know what the item pictured in UI 66 is, so just nailing the location is fine.) If you live around UI 67, you'd best keep your prized hotrod car locked up lest some young tyro do something stupid with it. And when visiting UI 68, you may discover that your words are worth a lot. OK? (Wow, these are some lame hints.)
Now for the new puzzler:
Where are we? Rot-13 your guesses, please!