Karl has gone to work and Sam and I find ourselves back where we began yesterday when we first arrived in the city. We are next to the new opera house. Karl's tour has recoloured and remapped the landscape and I reflect, as I sit, on Britain and Wales and what, from within, I have taken for granted and missed. You can see the change here. Huge adverts hang from building tops. "Buildings, not billboards" as Karl is so keen to point out.