Aspen Snowmass is a premier ski destination known for its four diverse mountains, legendary terrain, and vibrant apres-ski scene. Aspen Snowmass is a winter resort complex located in Pitkin County in western Colorado in the United States. Owned and operated by the Aspen Skiing Company it comprises four skiing/snowboarding areas on four adjacent mountains in the vicinity of the towns of Aspen and Snowmass Village. The four areas collectively form one of the most famous winter resorts in the world