Very cool idea. A few bugs I found.

I was doing locations. I got something that looked like the parthenon. Like an idiot, I clicked Rome. Wrong. Chalkida, Greece.

Next location: same pictures. OK, I picked Chalkida. Wrong. Orchomenos.

Next location: same pictures. OK, I picked Orchomenos. Correct. And the accepted range was a huge square, covering most of Greece and the surrounding Mediterranean. Chalkida would have been within it as well.

So the location seems inconsistent with the pictures and the same pictures kept showing up.