We're in Italy for two weeks on vacation with a couple of friends. We've been staying for the past few days in Bologna, an extraordinarily beautiful city in the north of Italy. Bologna is the home of the oldest University in Europe, and students have attended classes in some of the lecture rooms for almost a thousand years. Bologna is also a city of porticos, covered walkways along the streets that shelter walkers and talkers from the elements. There are over 35 km of these porticos in the central, oldest part of the city. And Bologna is a city of churches.