Share article to Aspen, established in 1879 by Henry B. Gillespie, began as a silver-mining town and developed into a hub for culture and recreation on Colorado's Western Slope. Today Aspen is one of the most popular vacation destinations in Colorado. Place: Pitkin CountySource: Wikimedia CommonsSource: https://upload.wikimedia.org/wikipedia/commons/a/a7/Lift_1A_on_Aspen_Mountain...