The urbanism that follows the trace of the Royal Road (Bous Square, Carrer Major and De la Vila Square), 10 medieval towers and 600 metres of wall, extending from Bous Square to the Barcelona gateway, remain from the former walled precinct of Hostalric.

The wall was built with basaltic stone extracted from the hill that the castle is built on. The wall is tall, and is topped with squared merlons. Behind this was a parapet walk connecting the towers. These towers are cylindrical and semi-cylindrical, and 10 of them still stand.