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Since 1837, Tiffany & Co. has been the world's premier jeweler and America's house of design.

Long before Audrey Hepburn gazed longingly into its gorgeous windows, Tiffany’s sold its baubles in its signature blue boxes to the world's elite, including President Abraham Lincoln. Today, the iconic jewelry emporium continues to attract the rich, famous and powerful, as well as tourists eager to gawk and spend, too.

First established as a stationery and fancy goods store in lower Manhattan in 1837, Tiffany moved to its current location in 1940. Past the revolving door, the first floor is lined with fine jewelry created by Tiffany's stable of designers, including Paloma Picasso, Elsa Peretti and Jean Schlumberger. Take the embossed elevator to the second floor, filled with a jaw-dropping selection of engagement rings; serious buyers ensconce themselves on comfy couches to peruse various settings—the Lucida, the Etoile and the classic, six-prong Tiffany—encrusted with myriad diamonds.

Brides-to-be can browse the fourth floor for elegant table, glass and silverware, as well as upscale wedding invitations and thank-you cards, then head down to three for less-pricey but beautifully crafted sterling silver jewelry, ideal for wedding-party favors (not to mention bat mitzvah gifts). While there are also fine items for men (cuff links and watches) and even babies (solid silver rattle), Tiffany undoubtedly remains a well-heeled girl's very best friend.