Always bustling with the sound of tables being drawn under the arcades or a few concerts, this delicately architectural mineral triangle slopes gently down towards the Seven Churches, the heart of the Christian faith in Bologna. Among the Renaissance palaces that line it, you'll recognise Palazzo Salina (1513) by its terracotta heads by Nicoló da Volterra. This perfect setting makes you want to sit down for a coffee in the early hours of the morning.