Just about anyone who has visited Loreto knows that Parque Nacional Bahía de Loreto (PNBL) is special, and worthy of protection. But what's the best way to spread that message worldwide? Children! Or at least that's part of the solution put forth by the United Nations Educational, Scientific, and Cultural Organization (UNESCO). In 1972, the UN passed the World Heritage Convention in Paris, asking countries around the world to designate cultural and natural sites worthy of special protection.