B could have been for Birds or Butterflies or Babies or Boys, but I've chosen Bridges. Nobody sends me babies or butterflies. :)
I seem to have accumulated a considerable number of bridges over the years. Many, of course, are points of interest in themselves. The one at the top right is Pont Alexandre III in Paris. You can see Les Invalides ahead while the Eiffel Tower would be behind the photographer. The dilemma is where to file it: with the other bridges or in my Paris album?
I realise, as I group these cards together, that there is undoubtedly a link between bridges and arches.