Kayaking along Pictured Rocks National Lakeshore, Upper Peninsula, Michigan. I did this for vacation last year. It's an eight hour day trip along the Pictured Rocks. Breath taking and well worth the money you spend on the experience!
Oneonta Gorge, Oregon is in the Columbia River Gorge with a unique set of aquatic and woodland plants. The ferns and moss make the walls look like a fairy tale, and visitors can walk through the creek on a warm summer day.