The architecture and the distinct metal arch structures in this elevated park setting strongly suggest a modern urban area in Japan. The dense skyline and the specific design of the pedestrian walkways are characteristic of large Japanese cities like Tokyo or Osaka. The overcast sky and the overall aesthetic of the buildings point towards a well-maintained, high-density metropolitan environment. I am fairly confident this is in Japan, likely in a central district of Tokyo.

I suspect this is the Shibuya Stream area in Tokyo, Japan.

then: guess