White Night

When the French spend a sleepless night, they call it a nuit blanche (white night). And you're unlikely to get much kip during Paris’s annual Nuit Blanche on the first Saturday of October. Special routes all across the city are lined with vast art installations, music, fireworks, and light shows. The museums are open all night too, and the metro runs round the clock for this terrific dusk-to-dawn street party. Plus, it’s all free!