For just a drink, snack, or coffee, nothing beats any one of the tiny little cafes along Piazza Duomo, in one of the most beautiful squares of Italy, where you can do a fair amount of people-watching. Within medieval tufa walls, the Antico Caffè Minerva on Via Minerva 15 (tel. 0931-22606) a side street parallel to the Duomo, is a favorite of visitors and locals alike. It's open Thursday through Tuesday from 7am to 1am.

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