Le Train de La Rhune

Absolutely recommend taking the little wooden rack train up La Rhune, a unique experience not far from the Spanish border. It's been running since the 1920s and grinds up at walking pace for about half an hour, with ponies and sheep wandering across the track. The ride is spectacular and the view from the top is gorgeous: the whole Basque coast laid out below you, Saint-Jean-de-Luz and Biarritz and the beaches running north into the haze. Go for the view, and stay for it. Take water and snacks: the café at the top won't refill your bottle and it's pricey.