Today we"re at the iconic Rideau Canal Skateway in Canada"s capital city of Ottawa. Each winter a 4.8-mile section of the canal downtown is converted into the world"s largest—and second-longest—outdoor skating rink. Rideau was designated a UNESCO World Heritage Site in 2007, and most years this rink section becomes a featured attraction of Winterlude, a free annual festival that usually attracts visitors from across the country for the first three weekends of February.