The Caspian Sea is the world’s largest lake, the world's largest inland body of water, and its Azerbaijan shore is the major tourist attraction and one of the best places to visit. The most beautiful beaches to visit tourists can find outside of the Baku area. Biodiversity is just stunning - the Caspian seal, Caspian gull, e zebra mussel, Caspian tern, and many more species are spotted in this unique ecosystem.