Marden Estate-Palm Beach

This mansion, owned by investment banker Bernard Marden, was listed at $45 million in December 2002, but the price was brought down to $40 million. Marden sold off his East Hampton oceanfront house for $23 million to money manager Ron Baron last year. In 1997, he bought this Georgian-style Palm Beach house for $16.5 million, and last year he decided to sell the mansion in an effort to simplify. The main residence is 18,000 square feet. The property has 295 feet of oceanfront land and covers 3.4 acres. Nadine House of Nadine House Realty is the listing agent.