Gajahgran
I was in love with Little Joe (Micheal Landon) too. About 40 years later and travelling in America we came across a sign to Bonanza ranch near Lake Tahoe. Had to visit and there it was, not a film set but an actual ranch, there was even a copy of the map on the wall. We had Hos burgers for lunch. Well worth the detour.
Yes I went there in 1984 - landed in LA 3 days after the Olympics finished, went to a wedding and then drove up the Pacific Coast Highway via Yosemite and Lake Tahoe, to Vancouver Island where my Uncle lived on the side of a cliff in an idyllic little place called Maple Bay .... it was the best of holidays, with the Ponderosa Ranch included!