My favorite part of Denali National Park was the sled dog area. During the winter months, the park rangers still use working sled dogs for park maintenance and construction projects, so there is a training facility at the park. During the summer, the dogs are off-duty. Visitors can walk around and freely pet the dogs, all of whom are well-socialized and love the attention. The ranger also did a demonstration to show how the sled team works. It was definitely a highlight of the trip.