George Charles Boldt (1851-1916), was a Prussian-born, self-made millionaire, who influenced the development of the urban hotel as a civic social center and luxurious destination.
He is perhaps best known for building Boldt Castle in the Thousand Islands area of New York State. The castle was intended as a gift for his wife Louise Kehrer Boldt, but when she died suddenly in 1904, construction was halted. The castle, which has gone under major restoration after decades of vandalism, is now a major summer tourist attraction at Alexandria Bay.