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Location: Water Mill, N.Y.
The Skinny: This classy Georgian manse on Long Island's Mecox Bay has many things going for it: a historic pedigree, lush grounds with mature trees, and over 500 feet of shoreline, just to name a few. But the most unique feature has got to be the 4-story windmill that guards the home's private gravel drive. Designed by architect W.E. Brady and built around 1900, the seven-bedroom dwelling still contains many of its original fixtures, including the "wainscoting, lead pane windows, and steam radiators," while making way for modern conveniences like granite countertops and a fitness room. It's priced at a whopping $38.5M, which includes a guest house and six acres of manicured lawns and tennis courts.