The map of Agrigento 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 Agrigento also includes these areas:
Ribera, Racalmuto, Campobello di Licata, Palma di Montechiaro, Cianciana, Partanna, San Cataldo, Menfi, Agrigento, Licata, Raffadali, Sciacca, Ravanusa, Canicattì, Aragona 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.