Satisfy your wanderlust with two high-concept shops, one that travels with you, another that travels for you. Blink and you'll miss Vacant (, an elusive store run by L.A.-based media man Russell Miller that moves to a different locale every few weeks—last month it was in Tokyo, this month, Chicago. The store sells limited-edition collectibles by international designers: sassy customized Reebok sneakers by Britain's Keanan Duffty, gauzy dresses by Mexico-based Alicia Lawhon, action figure toys from the American machine company Caterpillar.

• Shoppers who would rather have the world brought to them can head to New York's Opening Ceremony (35 Howard St.; 212/219-2688;, whose owners, Carol Lim and Humberto Leon, scour the globe—one city at a time—for innovative designs. The warehouse-like space carries avant-garde looks, underground style magazines, vintage Dior and Chloé designs, and South American flip-flops, all snagged on the duo's travels.
—Carly Berwick