202 kilometre (125 mile) length. The Rideau Canal; a National Historic Site of Canada, a Canadian Heritage River and a UNESCO World Heritage Site, consists of a series of beautiful lakes and rivers connected by canals. It stretches from Kingston, at the foot of Lake Ontario, to Ottawa, Canada's capitalThe Rideau Canal Waterway, which links the lakes and rivers between Ottawa and Kingston, is the oldest continuously operated canal in North America. The locks are operated today much as they were when first opened in 1832.