The guide, Paul, the educational content throughout by the rich Alaskan experiences of the outdoorsy Paul and his technical knowledge of the Alaska pipeline history and serious historic personalities of AK, the beautiful drive up and down the Dalton Highway, the Arctic Circle ceremony he did, and just the pure air and wilderness. Unfortunately no wildlife sightings, but still the most amazing. Bus is good, climate controlled, scenes amazing, and accompanying narrative. Salmon Soup at the Yukon base camp store cum food service place was excellent. Great.