We spent several days in Acadia and the absolute highlight of our trip was rock climbing for a half day with Acadia Mountain Guides. After being rained out on our first try, they were able to schedule an extra session with the owner Jon for us. Boy did we luck out. We learned from the website that he was one of only a few guides in the US certified to guide anywhere in the world and that he had developed climbing instructor training programs. On the cliff he was clearly confident, competent, and very quick. He set up several different climbs and all five of us got to try 4 - 5 climbs. Each had a different challenge. We even got to rappel down to the ocean and we learned how to belay each other. I was a little scared being belayed by my 13 year old but Jon always kept a hand on the rope just in case. We will definitely be back to do more. Everyone loved it.