Finally try visiting some of the great beaches to the north, the countries of the Caspian Sea signed a Convention on the Conservation of the Caspian Sea on the Caspian Sea Convention in the year 1382, and celebrated the entry into force of the treaty as an important environmental event on August 13, 2006. The 21st of July is a milestone in the history of environmental cooperation in relation to the Caspian Sea, and this day is named after the Caspian Sea.