The Old Quarter is a must-see in Hondarribia. The highlight is its grid street plan, typical of cities founded in the medieval period, as well as its narrow cobbled streets. The ideal plan is to take a short excursion, starting from Porta Santa Maria, one of the main entrances to the city, and another from Porta San Nicolas, which takes us to Calle Mayor, the main street entirely paved with cobblestones.