The architecture is classic European, featuring ornate, neoclassical masonry with arched doorways and detailed stonework. The blue street number sign (number 10) is characteristic of Central European cities, particularly in Austria or Germany. The high-end vehicles parked on the street suggest an affluent urban area. I suspect this is Vienna, Austria, given the specific style of the building facade and the street signage. I am fairly confident in this assessment.

then: guess