UNESCO World Heritage Sites
It was to preserve and protect the most outstanding of these values that the UNO created the World Heritage Committee and accepted the Agreement regarding the protection of the world's cultural and natural heritage, to which 175 countries have attached themselves. In 2005, 812 World Heritage sites in the territories of 137 states were added to the list. The original two categories have been joined by a third, that of cultural region. Here can be found treasures where the natural and man-made environments are tightly interdependent and mutually worthy of preservation.