Contrary to various public misconceptions, Mar-a-Lago—the exclusive Atlantic oceanfront resort that frequently served as former President Donald Trump’s “Winter White House”—didn’t make Palm Beach, Florida’s lavish real estate and lifestyle famous for the first time around. Former President Donald Trump’s beachfront Mar-a-Lago resort, also sometimes called his “Winter … [+] White House” in Palm Beach, Florida. Photo by Joe Raedle/Getty Images Getty Images The Sunshine State’s “Playground For The Wealthy” long has been uber-posh, dating back to the late 1880s when oil tycoon Henry Flagler first built The Breakers and The Royal Poinciana Hotel which eventually became the centerpieces of his luxury, southern hospitality empire catering to northern old money…