If you enjoy getting up close and personal to nature you should visit the Butterfly and Nature Conservatory, you will be enthralled by the beauty and proximity of the butterflies, birds and resident turtle. The Conservancy is an oasis of beauty after the frenzied scene on Duval Street. There are benches to sit and just observe, but most people walk through, enjoy and move on.
Had a great visiting Key West's Garden Club it was a truly beautiful place near Smathers beach. Great history of this old fort now laid out beautifully by Key West Garden club. If you have time take a lunch and spend a couple of hours there.