A 10-acre estate in Westchester County, New York, owned by former New York Stock Exchange boss John Thain, is so large it stretches across three different towns and has five separate street addresses. The property at 350 Purchase St. sits across the borders of the City of Rye, the Village of Rye Brook, and the Town of Harrison. Public records show the main house is 13,172 square feet, sitting on a lot of about 438,000 square feet. Built in 1910, it's one of the few private homes in the area split across three separate local governments, according to local news outlet Rye-Harrison News. Thain and his wife, Carmen, bought the estate in 1995 for $3.7 million. A November 2007 report by the New York Post described the full scale of the 14-bedroom mansion. At that time, the property had two swimming pools, a clay tennis court, several beehives, and a private stream running through the backyard that fed into a lake stocked with fish. Property records show Thain has been listed at the address since at least 2006, and federal election filings have regularly listed a Rye address for him.
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