Likely one of Boldt Castle’s most photographed structures is the Power House and Clock Tower. Located on the eastern end of Heart Island, it was designed in the fashion of a Medieval Tower. To date it was one of the Thousand Islands Bridge Authorities largest reconstruction projects after a fire in 1939 severely damaged the building. Today it stands as George Boldt had originally intended, rising out of the St. Lawrence River from an underwater shoal. Connected to Heart Island by its one of a kind, picturesque, arched stone bridge. While its design is beautiful, it was designed as much for function as fashion. It housed two generators that would supply electricity to the entire island. Unfortunately much of the original equipment has been lost, only a few pieces remain on display. Today there are also photos and displays depicting the lifestyle of the people in the 1000 Islands at the turn-of-the-century.