In 1914, the Hotel du Cap-Eden-Roc along the waterfront in Cap d’Antibes, France, created its now famous Eden-Roc Pavilion seawater swimming pool. The historic hotel—which inspired F. Scott Fitzgerald’s Tender Is the Night and was a hangout for Pablo Picasso, Marc Chagall, and many other artists—is now celebrating the Pavilion’s 100th anniversary with a lineup of festivities from May through September. On May 9, a gala banquet will kick off the four-month bash with a feast to include signature dishes by chefs …