Making panoramas of cities or urban and industrial scenes have challenges all of their own. Finding the space to set up a tripod is always a concern as the best location is usually to be found on a traffic island between lines of roaring traffic or in the middle of a busy pedestrian thoroughfare.
The construction of lenses can highlight distortions, odd perspectives and unusual curvatures, and the process of digitally stitching images together exacerbates these inherent problems. Add to this the fact that in images of a city objects are always in motion, meaning that things can change from one frame to the next, occasionally resulting in the unexpected duplication of vehicles and people.
All of these difficulties can make the task exciting, however, and it can be most rewarding when the final image is better than you initially envisaged.