The architecture features ornate, classical stonework with heavy, intricate wrought-iron gates typical of grand European urban centers. The style strongly suggests a historic district in a city like Paris or Vienna. The clean, light-colored masonry and the specific design of the archway are characteristic of 19th-century Haussmann-style or similar neoclassical buildings. I suspect this is in Paris, France. I am moderately sure.

then: forward

The architecture features distinct, tall, multi-paned arched windows set into a smooth, light-colored facade with horizontal rustication. These specific window designs and the small, low-level basement vents are iconic of the Hofburg Palace complex in Vienna. The overall aesthetic is unmistakably Austrian imperial architecture. I am highly confident this is in Vienna, Austria.

then: guess