Boldt Castle Located on Heart Island between the shores of Wellesley Island and Alexandria Bay, NY Boldt Castle is six story, 120 room castle, complete with tunnels, a powerhouse, Italian gardens, a drawbridge, alster tower (children’s playhouse) and a dove cote. Not a single detail or expense was spared. Built by successful self-made businessman, and super rich guy George Boldt, who was most well-known as the owner…