Small tropical country in size but huge in biodiversity, Panama offers the visitor an incredible and exuberant natural variety. An abundant vegetation and colorful variety of animals, gives you the opportunity to experience countryside vitality and the abundant Panamanian tropic. The ecologic richness is inherent of what lives in this biological bridge of numerous species which move between North and South America, since three million years ago. The great biodiversity that Panama offers is what propelled the Smithsonian Institute of the United States to establish in the country the Smithsonian Tropical Research Institute (STRI), operating since 1923. The contact with nature in this tropical paradise is a gratifying experience to whoever visits this country, which has destined more than 30% of the national territory to natural reserves.