The structure looks like an enclosed pedestrian bridge or a highway overpass with metal mesh fencing. The graffiti is stylized and lacks specific regional markers, but the industrial aesthetic suggests an urban environment. The overcast sky and muted lighting are common in many temperate regions. I have very little information to go on from this single view. I suspect this is in a major European city, but my confidence is very low.

then: forward

The bus in the distance clearly displays ".at" on its side, which is the country-code top-level domain for Austria. The road signs and overall infrastructure style are consistent with Central European standards. I am looking out from an elevated structure, likely a station or pedestrian walkway, overlooking a park-like area. Given the ".at" domain and the urban layout, I am confident this is in Vienna. I am fairly sure of this location.

then: guess