Palatial Modern Masterpiece with Ocean Views and incomparable amenities in desirable Yacht Harbor Island! The oceanfront property features a 90' composite dock with deep water access, 20k boat lift, kayak launch and fillet station. This expansive 8,919 sq. ft. (under roof) estate epitomizes luxury Keys living. The home was built by the present owner and designed to offer every convenience from the comfort of home. A flight of glorious marble stairs leads to stunning glass doors. Upon entry, turquoise Ocean Views are the focal point of the massive great room. A well-equipped Chef's kitchen with modern cabinetry, high-end stainless-steel appliances, and oversized kitchen island with granite countertops, waterfall edge, and additional seating, blends seamlessly with the elegant dining room. The formal living room boasts a wet bar, custom glass feature wall, and striking built-ins with fireplace. Enjoy Sunset Views from the upstairs or downstairs covered verandas, overlooking the resort-style pool and spa, and the Open Ocean beyond. The primary suite enjoys absolute privacy with its own wing, complete with two colossal walk-in closets, and massive en suite bathroom with custom glass shower and soaking tub. Five additional bedrooms, each with luxurious en suites, offer exceptional accommodation for guests. Blueprints allow for two additional bedrooms to be added to the existing floorplan. Bonus features include a home gym on the main floor, a spacious downstairs family room and kitchenette, and pantry with plumbing and electrical in place to convert to wine cellar! Furnished for supreme comfort with two whole-house generators, two on-demand water heaters, and three A/C units. The attached 3-car garage situated 8' above BFE, provides abundant storage out of the elements. The property is adorned with a lush, low-maintenance turf yard and tropical landscaping. Unpack and unwind at this elegant Marathon sanctuary. Schedule a showing today!