Berkelouw Books on Bong Bong Street is one of the best reasons to browse Bowral's main commercial strip. It occupies a large heritage building and stocks an excellent selection of second-hand, rare, and antiquarian books alongside new titles. The shelves are deep and well-organized, and you can spend an hour here easily.
The Berkelouw family has been in the book trade since 1812, originally in the Netherlands, and their Bowral shop is one of the largest in their Australian chain. It is a proper bookshop rather than a tourist attraction, which is exactly what makes it worth visiting.