This afternoon we went to the Mucem (Museum of Civilizations of Europe and the Mediterranean) here in Marseille. By far, my favorite exhibition was one that dealt with the urbanization of five cities surrounding the Mediterranean — namely Marseille, Venice, Istanbul, Cairo, and Alger. At one point, this was the center of the commercial world. Great empires were forged and great fortunes were made here. But things have changed a little since then. And in some cases, what we are now left with are scenes like the one you see above (photograph by Martin Parr). This is easily the greatest photo of Venice I have ever seen. Venice is a tiny city, but it receives tens of millions of tourists each year. This photo does an extraordinary job of capturing what that might feel like.