This year, for the first time in its more than 50-year history, the beloved Rideau Canal Skateway in Ottawa didn't open. Since its inaugural season in 1971, the famous canal-turned-rink has welcomed Ottawans and other visitors every year, offering a skating route of nearly eight kilometres through the heart of the capital. But this year, temperatures were higher than average, making the world's largest natural outdoor rink unsafe for skating.