Viterbo has around 100,000 inhabitants altogether, it's a provincial capital - SO by size I'd say it's either a large town or a smallish city? It also has a modern part with all the usual trimmings: apartment blocks, office blocks, department stores, buses and bustle... plus a very interesting Etruscan museum. These pics show the old part - the "historical centre".  And as melo says:

it's quite amazing how aesthetic and atmospheric the historical centre of almost any italian city or town is

;-).. not only a delight to explore but an endless source of material for photo-diaries.

"Ignoring moralities is always undesirable, but doing so systematically is really worrisome." Mohammed Khatami