The road markings and the style of the traffic signs, specifically the "no parking" circle with a red border and diagonal, are very characteristic of Argentina. The architecture, with its mix of classic European-influenced buildings and modern high-rises, strongly points toward Buenos Aires. The vegetation, particularly the large, mature trees lining the avenue, is typical of the city's parks and wide boulevards. I suspect this is near a major park or plaza in Buenos Aires. I am fairly confident in this assessment.

then: guess