The Trumps have been building since the mid-1980s luxury real-estate projects in South Florida, such as the Luxuria, a condo building in Boca Raton.

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"The city is getting more sophisticated, but people don't want to forget about its past, " says Stefan Sklaroff, who just opened a 10, 000-square-foot, two-level modern-furniture store called Cella Luxuria in a 19th-century brick building downtown.

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