In this enchanting labyrinth of all things chocolate, you can shop for cocoa nibs and crystallized violet petals, sip hot chocolate in a Moorish-style courtyard while watching chocolatiers in action, or take a truffle-rolling class at the adjacent school. Chantal Coady worked behind the Harrods candy counter before opening Rococo in 1983; it now has four locations and is one of Britain's largest handmade chocolate makers. Its artisan bars, which come in antique packaging with exotic flavors like basil and Persian lime, make them a perfect gift for chocolate lovers back home.

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