The Arapahoe Basin ski area is located at Keystone, CO.  They have 105 trails serviced by 7 lifts.  They offer lessons for beginners and rental equipment if you do not currently have some.  They have a couple of terrain parks for any skier to try.  They offer a variety of restaurants and lodging on the property so you do not have to leave if you are staying a while. They boast of their long ski season for the US and the longest for Colorado, opening in October and typically staying available until the first part of June.  They offer some of the highest skiable terrain in North America and the views are said to be simply awe inspiring, which makes sense because they are high on the Continental Divide.