This is a great place to bring up just how intimidating this aspect of this fandom can be. "Clint and Natasha on a mission in a city" is indeed a huge feature of this fandom, and part of the charm of it is the elements that make that city unique and different from other cities on the globe, and how authors feature those in their stories.

Which is so freakin' hard for me! I envy authors who can assimilate a city into their stories this way. I don't know cities, don't register what makes them unique, or if I do, I'm thinking that only I would notice something like that because I'm a rube or a tourist, so I won't call attention to it. In the current exchange fest I had to specify that I couldn't possibly write Budapest because I don't know Budapest--and, in fact, I've started to favor writing in fictional cities for this fandom, because I can't be accused of getting something wrong that way. It's really intimidating!