Photo courtesy Lawrence Halprin Collection, The Architectural Archives, University of Pennsylvania. Landscape architect Lawrence Halprin conducting a “Driftwood City Discussion” at Sea Ranch during a July 5, 1966, workshop. Fifty years ago, a breathtaking, 10-mile-long, mile-wide strip of the California coast, 105 miles north of the Golden Gate Bridge, was declared a privately-owned model community and opened for radically eco-friendly residential development. Owned and managed for 42 years as a sheep ranch, the new town was named The Sea Ranch (the “The” is mandatory).  Al Boeke, manager of The Sea Ranch for its new owners (Oceanic Properties, a division of