a major landmark and tourist attraction in the Thousand Islands region of the U.S. state of New York.

George Charles Boldt Sr. (April 25, 1851 – December 5, 1916) was a Prussian-born American hotelier.

Carl Robert Boldt (October 22, 1932 – January 30, 2015) was an American college basketball player who was an integral member to the University of San Francisco's national championship team in 1955–56.