This striking glass-and-steel cube showcases an outstanding collection of fine art, graphic art and photography. Kandinsky, Picasso, Magritte and Monet canvases hang out alongside curvaceous works by Strasbourg-born abstract artist Hans Jean Arp. Find details on temporary exhibitions on the website.

Don't leave without enjoying a drink at the glass-fronted Art Café, graced by bold frescoes by Japanese artist Aki Kuroda. The terrace commands terrific views of the River Ill and Petite France.