around piazza Giacomo Matteotti and piazza IV Novembre
They wandered to and fro, accordingly, and lost themselves among the strange, precipitate passages, which, in Perugia, are called streets, Some of them are like caverns, being arched all over, and plunging down abruptly towards an unknown darkness; which, when you have fathomed its depths, admits you to a daylight that you scarcely hoped to behold again.
Nathaniel Hawthorne “The Marble Faun: or, The Romance of Monte Beni Vol. 2” Boston 1860