Ontario Ministry of Transportation Ferries: Kingston (Ontario) and Wolfe Island. Clayton Island Tours: Clayton, Boldt Castle and Rock Island Lighthouse. Uncle Sam Boat Tours: Alexandria Bay, Boldt Castle, Clayton and Singer Castle. Kingston 1000 Islands Cruises: Kingston (Ontario) and Admiralty Islands. Township of Frontenac Islands: Howe Island Ferry Road (Gananoque), Howe Island, Simcoe Island Ferry Road (Wolfe Island) and Simcoe Island.