Set on approximately 227 private acres in the heart of Knights Valley, Ghost Donkey Ranch is a rare architectural estate where modern design and natural beauty exist in complete harmony. Designed by internationally recognized architects including Tom Kundig, Adam Gordon, and Bjarke Ingels Group, the property blends a refined modernist farmhouse aesthetic with the authenticity of a working Wagyu cattle ranch. Expansive glass walls open the home to sweeping views of Mount St. Helena, surrounding pastureland, oak groves, and rolling hillsides, creating a seamless indoor-outdoor living experience. The estate offers exceptional privacy while remaining moments from the wineries, resorts, and dining of Calistoga and Healdsburg. Amenities include multiple guest accommodations, a dramatic pool pavilion, extensive outdoor entertaining spaces, and a collector-focused motor court and garage concept designed for automotive enthusiasts. A truly one-of-a-kind Northern California ranch estate that celebrates architecture, land stewardship, and elevated country living.