Sightsee on a Denali Tour Bus. A particularly beautiful day for a tour bus trip in Denali, as seen from Polychrome Mountain (approximately Mile 45 on the park road) NPS Photo / Chris Smith. Sightsee on a Denali Tour Bus (U.S. National Park Service) Passengers stay with their bus for the duration of the trip. Some tours offer opportunities for short walks, while others will only disembark passengers for bathroom breaks.