Where else are you going to have a good chance of seeing wild elephants (or buffalo, or hippos) feeding with surf crashing in the background? Many places in Gabon offer excellent opportunities for seeing lowland gorillas and wild chimpanzees. Gabon is the second-most forested country in the world (82%-source, The Economist) and has the second-best air quality. It's a unique place that's likely to begin changing soon. See it before it does.