Unless it's a trick of the camera, it has to be a road with a sharp drop judging by how each of the houses on the left are 'stepped' as you move down along the terrace. This is as well as the clear drop in the road, with the buildings on the right being much, much lower than the buildings on the left.
Also the buildings in the distant background are very high, almost like there's a dip/valley between that position and the foreground. That's why I originally thought this might be close to an embankment.