The walls of Derry are similar to those of Berwick but more complete and with more imposing gateways through them. They are of course a big draw for visitors - so much so that an English accent surprises the locals less than it does in Belfast - and you are expected to stroll around the complete circuit and admire both the views and the structure of the walls themselves. I've done my best, but I can't see this defensive structure as anything other than oppressive.
Within the walls of Derry there are some of the most beautiful Georgian streets I've ever seen, and that's presumably where the rich merchants originally lived. Just outside the walls is where the poor people lived, and seemingly still do. I have never seen any other city where the historical distribution of power and wealth is expressed spatially in such a stark way. I don't find it conducive to a carefree holiday stroll.
I've trudged round four different museums that between them cover every shade of political and religious opinion on the history of Derry-Londonderry, making conversation with the staff of all of them in the most neutral tone I can muster. The only thing everybody agrees on is that they're all really worried about what will happen when the UK leaves the EU. There is much head-shaking and "we'll just have to wait and see."
I wanted to find a cheerful aspect of Derry to end this post on, and the best I could come up with was this golden teapot. It hangs outside a shop in the Strand Road, it's covered in real gold leaf and it's bigger than the golden kettle in Boston! A nice cup of tea, that really does unite us all.