My favorite escape from Vegas! Located only 30 minutes by car from the strip, this place is a world away. Great visitor center and an interesting 12 mile loop ride provides access to many short and long trails.
The Calico Basin area when you first enter seems to be the most popular area for hiking and picture taking, but further into the park there are many less traveled trails. In summer time, bring lots of water and get to park early, ideally before 7:00am. In winter time, be aware of cold, ice, and possible snow. Dress appropriately and bring your own water.