Ah, the French Riviera! An enviable sun-soaked stretch of coastline renowned for its sensational beauty, glorious white sand beaches and alluring glamour – this adult playground was the ultimate resort of the first half of the 20th century. But did you know that it’s also a Modernist art lover’s dream destination… Picasso, Chagall, Matisse, and dozens of other famous 20th-century artists vacationed, lived, and created