Colorado, United States
Buttermilk Ski Area is the easiest skiing mountain in Aspen, Colorado. Buttermilk has also been the host to the ESPN Winter X-games multiple times. It is also home to one of the best ski schools and children's programs in the United States. It was part of the original Aspen trio of 1960s: Aspen Mountain (ski area), Aspen Highlands, and Aspen Buttermilk.