For travelers to Barcelona who would never fill their suitcases with Gaudí snow globes or Sagrada Família thimbles, Xocoa (11 Petritxol; 34-93/301-1197;; from $3), the city's cult chocolatier, delivers the ultimate edible souvenir. The slick packaging, designed by Catalan artists Pablo Juncadella and Marc Català, is as clever as the contents are addictive (there are even cheeky warning labels). In addition to the standard nuts and toffees, the 40 gourmet chocolate bars come in unexpected flavors such as green tea, Jamaican pepper, even energy-enhancing ginseng and guarana. The newly minted gold bars ($25), made with mega-rich 73 percent cacao and 22-karat gold, are sure to raise the candy bar.
—Andrew Ferren