The architecture features classic European neoclassical detailing with rusticated masonry and arched doorways. The blue house number sign is typical of Central European cities, particularly Vienna. The high-end vehicles suggest an affluent urban area. I suspect this is in the inner city of Vienna, Austria. I am fairly confident in this assessment.

then: forward

The architecture is quintessentially Viennese, featuring the distinct "Gründerzeit" style with heavy rustication and arched doorways. The street layout and the specific design of the building facade are characteristic of the inner districts of Vienna. The lack of excessive signage and the clean, well-maintained appearance point toward a prestigious residential or embassy area. I am very confident this is in Vienna, Austria.

then: guess