According to the Guinness World Records, the world's largest weather vane is located in Jerez, Spain. According to the explore north website a challenger for the title of world's largest weather vane is located in Whitehorse, Yukon. The weather vane is a retired Douglas DC-3 atop a swiveling support. Located beside the Whitehorse airport the weather vane is used mainly by pilots to determine wind direction. This weather vane only requires a 5 km/hour wind to rotate. Other claimants to the title are located in: Westlock, Alberta, Canada: The Canadian Tractor Museum is home to the tallest functioning weather vane at 50 feet. This weather vane was erected in 2006 with a 1942 Case Model D Tractor atop it after being a volunteer project for 2 years.