Walls

Everybody in the house is excited at the prospect of our trip tomorrow to York. In many ways Yorks is the ideal city, historical yet with trendy bars and shops, the spiritual highs of the Minster and lows of the York Dungeon.
Yet much about the city doesn't fit the nornal pattern... No big central square or Piazza. No arcades or shopping mall... a northern citý whose wall contains and shapes it.
I understand the wall didn't reaaly have a defensive role rather an economic one making sure that those who came into the city to trade paid for the upkeep of the infrastucture.
I wonder if we could do that in the Calder Valley where shopkeepers moan at paying £2 to park for the day?
It's taken me a while to realise that walls are sometimes a barrier but can also allow the development to work.