This puzzle is part 10 of Gladys' journey across the globe. Each part can be solved independently. Nevertheless, if you are new to the series, feel free to start at the beginning: Introducing Gladys.
My today's destination is an ancient landmark. This city certainly has no shortage of historic sights! No wonder they call it the █████████████
Oops, better strike out that last part. Don't want to be giving out any unintended hints, now do we?
Wish you were here!
Gladys will return in "Fieldwork ahead".