Situated in the California bay's waters, Red Rock, also dubbed Treasure Island, covers three counties: Marin, Contra Costa and San Francisco. According to legend, the island was once a burial site for pirate's treasure - though the discovery of any has never been confirmed. In the early 19th century, Russian hunters trapped otters on the mass of rock, which has a private beach on its north side that faces Richmond Bridge. Then, in 1964, the land was snapped up by Mendel Glickman, the son of architect Frank Lloyd Wright, for less than $50,000. He dreamed of transforming Red Rock into...