Unique Geodesic Dome Home on 800 acre all-sports Lake Isabella! Includes both 1030 & 1032 Castle Drive. Nestled on a spacious double lot of approximately 0.6 acres, this one-of-a-kind Geodesic Dome home offers a rare opportunity to own a piece of architectural history. With soaring 19-foot ceilings and an open interior, the home at 1030 Castle Drive, Lake Isabella, MI 48893, provides an expansive atmosphere that is both inviting and awe-inspiring. This distinctive property, only on its second sale since its construction in 1969, promises a living experience unlike any other. The residence boasts 3 “official” bedrooms and 2.5 bathrooms, with additional versatile spaces including a loft with an attached half bath (could serve as a 4th bedroom) and a separate "guest house/office" (could serve as a 5th bedroom). Since 2016, the home has undergone significant upgrades, including a new well, roof, high-efficiency natural gas furnace with central air, siding, replacement windows, deck, driveway, landscaping, basement insulation, a high-efficiency water heater, and a complete new septic system currently in process. There is approx. 1450 finished sq. ft. in the main house and additional 200 sq. ft. in the secondary out-building. Outdoor living is elevated with a new hot tub installed in 2023, offering stunning lake views, and a large 22x22 wrap-around deck that doubles as a covered carport. The property backs onto a 3-acre green space maintained by the Lake Isabella Property Owners Association, providing direct access to a seawall dock (that will be transferred to the new owner) and the 800 acre all-sports lake. Enjoy the convenience of driving a golf cart from your backyard to your boat or explore the community's many miles of golf cart paths, parks, playgrounds, and beaches.