Notice the edges
Look for awnings, arcades and recessed entrances from the public walkway. Observe how small design choices affect the feel of a street.
Walk with the conditions
Keep the route short enough to change with the weather. Carry water and select a comfortable break point before adding another block.
Compare two moments
If you revisit the area, note how the light changes its mood. Your observations can become a small visual diary of the same place over time.