Nook of Naples: Life just isn't complete without a Saturday morning spent lingering inside a small business owned bookshop. Across from the excavated Greek foundations of Naples, Colonnese offers a wonderful range of antiquarian books, posters, and photographs. They focus mainly on selling Italian language books about Neapolitan history, food, and culture. Some Italian titles I've enjoyed, include: The Naples Underground: ventures through the mysteries of the parallel city, Fantastic Voyage (about the scientific inventions of alchemist and mason Raimondo di Sangro), and Comme te l'agia dicere?: the art of gesturing in Naples (replete with copious pictures).
Colonnese is about a block away from Piazza Dante -- the square where book dealers abound, selling both used and new titles.
Here's a little visual tour of the area:
The excavated Greek foundations in the heart of downtown Naples
Artwork inside the Piazza Dante metro station