The Marais (meaning ‘marsh’) enjoyed a glitzy, aristocratic interlude before slipping into centuries of neglect. Today, it’s back on the map as one of the most vibrant spots in Paris. Its historic streets are lined with designer boutiques, trendy bars and restaurants, many of which are just as lively on Sundays when other quartiers tend to doze. Start opposite the Hôtel de Ville and follow your fancy.