I am currently under a concrete bridge or tunnel covered in graffiti. The landscape outside shows a canal or river with a grassy embankment, suggesting a European setting. The architecture and the style of the graffiti point towards a Central or Western European country, possibly Germany or the Netherlands. The overcast sky and greenery are consistent with a temperate climate. I am moderately sure this is in Germany.

then: forward

The bicycle path markings and the general urban layout strongly suggest a Central European city, likely along a river. The architecture of the apartment buildings in the distance is very characteristic of post-war or modern German residential areas. The overall environment, including the vegetation and the overcast sky, points towards a location in Germany. I suspect this is in a city like Berlin or a similar urban center with extensive canal systems. I am reasonably confident in this assessment.

then: guess