The snow-capped Mount McKinley (also known as Denali) beckons as the centerpiece of Denali National Park. For the hale and hearty, a trip to the mountaintop -- all 20,320 feet of it -- just might be in order. June is usually the busiest month to attempt a climb, so get out that survival-gear checklist. Or, for those seeking something more relaxed, enjoy a scenic bus ride along Park Road -- with a gorgeous view of the towering mountain along the way. Learn how you can support America’s national parks – visit www.nationalparks.org.