There has been this one place that both, Mr. X (code word for 'my husband') and I have been dying to go into but have always had the kids with us (and knew, from past experience, that, that could totally take all the fun out of it!) Finally we had the opportunity!
If you are looking for eco-friendly and sustainable products these folks can help you. One of the links on their website, it's under the News & Media tab is a summer eco tour. It lists several destinations in that area that have met the owners strict criteria to be dubbed "eco-friendly" if you are in the area it certainly gives you some great options to visit.