Originally built in the 1900‘s by millionaire George Boldt, who managed the Waldorf-Astoria Hotel in New York City and the Bellevue-Stratford Hotel in Philadelphia. The castle was to be the Boldt’s summer home but in 1904 Boldt's wife, Louise Kehrer Boldt died and in his grief George Boldt stopped all construction. The 1000 Islands Bridge Authority purchased the dilapidated estate in 1977 and has restored it to a little better than its original condition in when construction was halted in 1904. Visitors are free to roam throughout the island and castle. Well worth the 7 dollar fee to visit!