I had somehow forgotten how many older London buildings are built of the lovely Portland stone. Yesterday was a day for visiting Sir Christopher Wren’s churches, each of them built of Portland stone by the barge load. Lucy and I started with St Paul’s Cathedral where, for the first time, I climbed to the top of the dome. My legs are sore still—this was a climb equivalent to three very tall lighthouse towers stacked one on top of another. I am sad that I have no photos of the interior of St Paul’s—cameras are forbidden there, so the sanctity of the place is not degraded nor the quiet meditations of the visitors intruded upon.