Riverside (Hamilton, Montana)
Riverside is a historic house museum in Hamilton, Montana, U.S.. It was the private residence of Margaret Daly, copper magnate Marcus Daly's widow. It is listed on the National Register of Historic Places. History. The house was first built for homesteader Anthony Chaffin. After the home and surrounding ranchland was purchased by copper magnate Marcus Daly in 1886, it was redesigned in the Queen Anne architectural style, with a tower. Daly's widow, Margaret, hired architect A. J. Gibson to redesign it in the Colonial Revival and Georgian Revival styles in 1910. Margaret Daly died in  1941, and the house was ultimately inherited by her granddaughter, Countess Margit Sigray Bessenyey of Hungary, in the 1950s. When she died, it was inherited by her stepson, Francis Bakach-Bessenyey, who deeded it to the state of Montana in 1986 in exchange for forgiveness of $400,000 in inheritance taxes. The Daly Mansion Preservation Trust was established, in part with a donation from him. The house has been listed on the National Register of Historic Places since July 16, 1987. It is now a house museum.