[Photo provided to China Daily]

Le Chocolat Alain Ducasse: The renowned chef and restaurateur taps his inner Willy Wonka at this temple of chocolate, whose confines used to hold an auto garage. Using vintage machinery, the manufacturing facility buys beans from around the globe and transforms them into myriad lush bars, truffles, pralines, ganaches and more. They're all for sale in the adjacent boutique.

40, rue de la Roquette. 33-14805-8286. www.lechocolat-alainducasse.com.