Ponderosa Ranch high in the Sierra Nevada, with a large ranch house in the center of it. Ben Cartwright was said to have built the original, smaller homestead after moving from New Orleans with his pregnant third wife Marie and his two sons, Adam and Hoss. The grown Adam, an architect/engineer, designed the later sprawling ranch house as depicted on TV ("Bonanza, The Philip Diedesheimer Story", Oct. 31, 1959, NBC-TV; "Bonanza: The Return", April 1993, NBC-TV). The fictional ranch was roughly a two-hour horse ride from Virginia City, Nevada. (Note: There are slight variations as to the origin of the Ponderosa Ranch,
Bonanza became the Cartwright's foreman. Initially, "Bonanza" aired on Saturday evenings opposite "Dick Clark's Saturday Night Beech-Nut Show" and "John Gunther's High Road" on ABC, and "Perry Mason" on CBS. "Bonanza"s initial ratings were respectable, often coming in behind Mason but ahead of the ABC line-up. Ironically, executives considered canceling the show before its premiere because of its high cost. NBC kept it because "Bonanza" was one of the first series to be filmed and broadcast in color, including scenes of picturesque Lake Tahoe, Nevada, although most of the episodes were obviously filmed on soundstages until the seasons near the end