Rocky Mountain National Park is a primer park that has really picked up in popularity in recent years. Due to its close proximity to Denver, I find that many families and other people who might be visiting Denver will make the effort to get to Estes Park and enter the Rocky Mountain National Park. It is amazing how you can get just a short distance away from Denver and see such amazing wildlife. On my last trip to RMNP I saw this amazing moose. It was shocking to see how it was not phased to the humans so close snapping pictures as it just went about its day.