The architecture and cobblestone streets strongly suggest a historic European city, likely in Central Europe. I see a police car with "POLICE" markings and a red-and-white street sign typical of the Czech Republic. The building style and the narrow, winding street are very characteristic of Prague's Old Town or Malá Strana. I suspect this is near the American Embassy in Prague, given the American flag visible in the distance. I am quite confident in this location.

then: guess