Bal Harbour Shops in Miami Beach, Fla., is the world's most lucrative shopping mall, netting $2,730 per square foot last year, or more than six times better than the U.S. average. That's largely due to the efforts of founder Stanley Whitman, who built the mall from scratch, bucked conventional wisdom and, at 94, still works three days a week. "I'm firmly convinced we will remain No. 1 in the world," he says.
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