This picture is currently my lock screen on my Windows 10 laptop, but nowhere can I find any captions which tell me which city this actually is. I also tried reverse Googling. No results.
I asked my geography teacher; he doesn't know either. The city looks like it is in a dry area (river banks); also, the building next to that "castle" looks like a mosque to me. So maybe it's some Oriental city, but it also looks very modern.