Marble and the Crystal River Valley is among the top tourism attractions in the State of Colorado, located on the western slope of the Rocky Mountains. Amenities and attractions in the Crystal River Valley include rooms, rental cabins, restaurants, RV parks, National Forest Campgrounds, jeep and ATV and mountain biking trails, horseback riding, hiking, tent camping, hunting, fishing, photography, cross country skiing, snow shoeing, ice skating, snowmobiling and shopping. And not to be forgotten, Penny Hot Springs, Redstone Castle, the Marble Museum, Crystal City and the Crystal Mill.