The map of Frosinone is based on OpenStreetMap; you can verify the level of detail on the left-hand map.

In addition to street names, transport stops and other amenities, you can view, search and bookmark the following map features (restaurants, shops, bars...):

The offline map of Frosinone also includes these areas:
Colleferro, Alatri, Isola del Liri, Pontecorvo, Ceccano, Cassino, Arpino, Sora, Priverno, Pontinia, Frosinone, Anagni, Fondi, Fiuggi, Ferentino and 3 others.

When you download this map, you also get full Wikipedia articles and photos for the area, available to search and view, even without an internet connection.