The cobblestone sidewalks, known as *calçada portuguesa*, are a strong indicator of Portugal. The architecture of the apartment buildings, with their specific rooflines and balconies, is very typical of suburban Portuguese residential areas. The license plates on the cars are European style with the blue strip on the left, consistent with Portuguese plates. The sunny, clear weather and the hilly terrain further support this identification. I am quite confident this is in Portugal, likely in a residential district near Lisbon or Porto.

then: guess