This mansion north of Hyde Park was built in 1895 by architects McKim, Mead, and White for Ogden Mills and his wife, Ruth Livingston Mills. Mills was the son of the “richest man in California,” Darius Ogden Mills, a New Yorker who capitalized on the Gold Rush and the subsequent development of San Francisco and founded the Bank of California, among other things. His son, Ogden, married Ruth Livingston, a member of the most prominent family along the Hudson River. The Livingston empire arose in the seventeenth century, when Scotsman Robert Livingston secured a royal patent on 160,000 acres of land along the eastern shore of the Hudson. His family would eventually own nearly a million acres in the area, and subsequent generations of Livingstons, and their often affluent spouses, would build dozens of mansions. Most of those that remain, like Staatsburgh, are now maintained by public agencies and nonprofits. Unlike the Vanderbilt estate at Hyde Park, which was donated to the federal government and so has access to deeper pockets for preservation, Mills Mansion was donated, in 1938, to the state of New York, and a full restoration has been slow in coming. This gives the mansion an interesting coarseness; its dulled exterior, for example, is the result of a 1950s coating of gunite.