The Estate Section.

South of Worth Avenue, the island turns ceremonial. The Estate Section is original Palm Beach — grand homes raised in the 1920s for some of the wealthiest families in the world, many by Mizner and his contemporaries, set behind deep hedges on lavishly kept grounds. Along South Ocean Boulevard, the stretch known as Billionaires' Row, a handful of estates still run the full width of the island, ocean to lake.

The section carries its history lightly. The Bath & Tennis Club and the Mar-a-Lago Club anchor its social calendar, Everglades Island sits just offshore in the lake with views over the Everglades golf course, and the winter-resident tradition that built these blocks continues — though more of the great houses are now lived in year-round than ever.

Oceanfront, lakefront, ocean-to-lake, and the quiet estate streets between: this is the island's most prestigious address, and its most enduring one.