Take a tour of the 63-acre Connecticut 'island' that just hit the market for $175 million

A 63-acre "island" connected by a land bridge to Darien, Connecticut, is up for sale for a whopping $175 million.

Though it's not currently the country's priciest listing, if sold at the full asking price it could be the most expensive residential property ever sold in the US. That record is currently held by the 2014 sale of a $147 million home in the Hamptons. Dubbed "Great Island," the estate is currently owned by the family of the 19th-century industrialist William Ziegler, who, according to the Wall Street Journal, used it as a summer home.

Let's take a tour of the waterfront estate, which comes complete with the original main house, the Villa Juliette. David Olgivy of David Olgivy & Associates has the listing in partnership with Christie's International Real Estate.