Billionaire's Secret Tunnel Estate Near Mar-a-Lago Hits Market for £66 Million
Secret Tunnel Estate Lists for $85M Near Mar-a-Lago

A breathtaking Palm Beach estate, complete with a clandestine underground tunnel and once owned by billionaire financier John K. Castle, has emerged on the luxury property market with a staggering $85 million price tag.

The magnificent waterfront property sits in an enviable location just moments away from the world-famous Mar-a-Lago club, creating what estate agents are calling "the ultimate billionaire's enclave."

The Tunnel Mystery

Perhaps the most intriguing feature of this palatial residence is the secret underground tunnel connecting the main house to a separate guest cottage. This architectural marvel adds an element of mystery and convenience rarely seen in residential properties.

While the original purpose remains part of the estate's allure, such features typically offer discreet movement between buildings, whether for privacy, security, or simply avoiding Florida's occasional tropical downpours.

Unparalleled Luxury Living

The 11,500-square-foot main residence embodies sophisticated tropical living with its elegant design and premium finishes. The property boasts:

  • Expansive waterfront views across the Intracoastal Waterway
  • Multiple lavish living and entertainment spaces
  • State-of-the-art amenities throughout
  • Impeccably landscaped grounds
  • Prime location in one of Palm Beach's most exclusive neighbourhoods

Billionaire Pedigree

The estate's previous owner, John K. Castle, is a renowned Wall Street financier and former CEO of Donaldson, Lufkin & Jenrette. His ownership adds to the property's prestige and appeal to high-net-worth individuals seeking both luxury and privacy.

The listing comes at a time when Palm Beach continues to attract international attention as a premier destination for the world's wealthiest homeowners, with properties near Mar-a-Lago particularly sought after.

Estate agents describe the property as "a once-in-a-generation opportunity" to acquire one of Palm Beach's most distinctive and well-appointed estates, complete with features that truly set it apart from other luxury offerings in the area.