Manhattan – Upper East Side
714 Madison Ave between 63rd and 64th Sts
This Madison Avenue gem—the jeweler's US flagship—lives up to the company's more than 180 years of excellence. Customers may walk in expecting a mere jewelry store, but they'll find a wonderland of sculptures, a stunning wall made of shattered, melted glass and a fourth-floor café featuring champagne, coffee and chocolate. As for the merchandise itself, it's all artfully crafted and divided into three dedicated floors: one for colored gems, one for diamonds and one for bridal products.