Many fashioned the traditional white outfit with a red scarf, acting out the daily rituals of the "festayres".
The annual Bayonne festivities get underway with a traditional ceremony around the balcony of the town hall and the appearance of King Léon.
"For me, it represents good times: friends, good food. And just plain fun!" Caroline, who travelled from Savoie, said.
She is one of many who travel to the Basque country every year.