Ongi Etorri. Bienvenue. Welcome to Alterguiding, private guided tours of the French Basque Country. We offer private guided tours (walking tours) of Bayonne, Biarritz, Saint Jean de Luz in English, French and Spanish. We also offer personalised half-day and full day private guided tours around the French Basque Country. If you are looking for a professional and passionate licensed tour guide, this is your site.