I have often posted photographs of the courtyard of Somerset House, where the Royal Academy used to be, occupying the rooms which are now the Courtauld Institute gallery; but I don’t think that I have ever previously photographed William Chambers’s grand, monumental, neoclassical entrance façade, announcing his project built for the government off the busy highway of the Strand and with keystones representing the rivers of England:-



I had no idea about the meaning of the keystones. Fascinating.