The best adventure of our week-long trip to Hawaii was Volcanoes National Park. Most of our time was spent on Oahu but the one-day tour to the Big Island will always hold special memories for us. Both my husband and I enjoyed it immensely. If you are on the fence and deciding whether to take the trip, you will not regret it. For those that love history and geography, it is truly an amazing adventure. Just fyi, I have asthma and did not experience any problems at all.