Ride a vintage wooden cog train up the slopes of La Rhune, the iconic mountain that straddles France and Spain, for panoramic views of the Pyrenees, the Bay of Biscay, and seven Basque provinces spread out below. This early-20th-century railway is one of the last of its kind in France, offering a slow, scenic ascent through pastoral landscapes where pottok ponies and wild horses roam freely.