A rare opportunity to own an iconic Mid-Century Modern estate and a piece of Nevada County history. Originally designed as the personal residence of the developers of Ranch Road Estates, this architecturally significant property is located within one of the area's most desirable gated communities and captures breathtaking panoramic views extending to Mt. Diablo and the Coastal Range. The approximately 3,300 sq. ft. main residence offers 3 bedrooms, 3 baths, a dedicated office, and an exceptional blend of authentic 1950s design and modern livability. Dramatic walls of glass frame the surrounding landscape and fill the home with natural light, while distinctive 16-inch thick stone walls provide character, warmth, and timeless appeal. Original Mid-Century details are thoughtfully preserved throughout, creating a home that is both unique and inviting. The spacious country kitchen serves as the heart of the home, offering generous storage, abundant workspace, and a layout ideal for gathering with family and friends. Extensive built-ins and storage areas throughout the residence add functionality rarely found in homes of this era. A separate approximately 600 sq. ft. ADU is connected to the main home by a two-car carport and offers excellent flexibility for guests, extended family, rental income, caretaker quarters, or a private home office. The property is designed for both relaxation and recreation, featuring an in-ground swimming pool, pool house, expansive front and rear patios, and multiple outdoor living spaces perfectly positioned to enjoy spectacular sunsets and long-range views. Equestrian and hobby farm enthusiasts will appreciate the fenced pasture suitable for horses and small livestock, irrigation water, fenced garden areas, orchard space, and room to expand agricultural pursuits. A detached shop/garage provides additional storage, workspace, or equipment shelter. Located in a Firewise community and just minutes from Grass Valley, Nevada City, and Penn Valley, this exceptional estate offers the perfect combination of privacy, architectural significance, natural beauty, and convenience. Whether you're seeking a distinctive primary residence, multigenerational living opportunity, equestrian property, or private country retreat, this remarkable Ranch Road Estates home delivers a truly unmatched lifestyle.