A highlight of any trip to Spain is a stay in the picturesque city of San Sebastián (pop. 185,000), known in the Basque language as Donostia. Set on the cusp of the seashell-shaped Bay of La Concha, it is just 14 miles from the border with France. Gourmets make pilgrimages here for the world-renowned Basque cuisine, which takes its culinary cues from both countries. And this charming resort town boasts more Michelin-starred restaurants per capita than any other city in the world.